Simple categories matching neutral:

• solute,
• dish,
• anaesthetic,
• activity,
• location,
• food,
• group,
• scent,
• particle,
• radiation,
• acid,
• gas,
• clothing,
• color,
• character,
• agency,
• oil,
• mutation,
• body,
• organization,
• thing,
• topic,
• proteinase,
• enzyme,
• ground,
• grounds,
• fabric,
• compound,
• substance,
• chloride,
• sugar,
• odor,
• organisation,
• information,
• residue,
• point,
• atom,
• stimulus,
• disaccharide,
• drink,
• quality,
• zone,
• hadron,
• solution,
• metal,
• thought,
• polysaccharide,
• substrate,
• steroid,
• cleaner,
• position,
• pharmaceutical,
• complex,
• diaphragm,
• atmosphere,
• container,
• component,
• path,
• object,
• surface,
• cause,
• hydrocarbon,
• filter,
• drug,
• sound,
• fermion,
• term,
• source,
• medium,
• environment,
• system,
• beam,
• element,
• polymer,
• solvent,
• precursor,
• emotion,
• structure,
• ligand,
• cleaning,
• fat,
• expert,
• saccharide,
• carrier,
• monosaccharide,
• liquid,
• fragrance,
• hexose,
• agent,
• country,
• species,
• carbohydrate,
• fraction,
• individual,
• issue,
• cue,
• shade,
• material,
• beverage,
• sulfate,
• tint,
• area,
• fluid,
• screen,
• entity,
• lipid,
• institution,
• core,
• colouring,
• lepton,
• amide,
• monomer,
• creature,
• building,
• phospholipid,
• lexis,
• ingredient,
• salt,
• unit,
• person,
• adult,
• tea,
• toy,
• space,
• constituent,
• place,
• weave,
• language,
• party,
• light,
• site,
• sterol,
• territory,
• resin,
• flavor,
• macromolecule,
• item,
• molecule,
• risk,

Members with property neutral:

• amine_group,
• glucose,
• cola_drink,
• playpen,
• park,
• urea,
• study_area,
• glycerol,
• glycogen,
• ketamine,
• anticonvulsant,
• latin,
• port_authority,
• neutron,
• community_adviser,
• edge,
• conjugated_protein,
• sr,
• rice-paper_wall,
• triglyceride,
• photon,
• water,
• command,
• light_tan,
• butter,
• corn_starch,
• busy_restaurant,
• massive_neutrino,
• forehead,
• carbonate,
• lavender,
• time,
• library,
• egg_albumin,
• uncle,
• surprise,
• styrene,
• hand,
• book,
• support_institution,
• appraiser,
• white_rice,
• collagen,
• taupe_beige,
• clinic_aide,
• griseofulvin,
• mn,
• university,
• national_archives,
• proctor_center,
• la,
• un,
• ec,
• taupe,
• newspaper,
• social_worker,
• benzene_derivative,
• judicial_commission,
• cafe,
• park_building,
• arbitration_committee,
• research_institution,
• methane,
• cloud,
• proton,
• cs,
• ethyl,
• bank,
• argon,
• soy,
• municipality,
• grandparent,
• electron,
• density,
• nitrogen_atmosphere,
• azote,
• methionine,
• empty_office,
• saline,
• oligosaccharide,
• community_location,
• allyl,
• leucine,
• methylated_sugar,
• grass,
• local_cafe,
• central_bank,
• house,
• hospital,
• campus_library,
• retreat_center,
• smaller_twill,
• phospholipid,
• threonine,
• waiting_area,
• magnesium,
• neutral_meson,
• organic_amine,
• calcium_antagonist,
• small_cylinder,
• unoccupied_office,
• teeth,
• oxygen_atom,
• aspirin,
• chalk,
• school_track,
• circumcision,
• soapstone,
• student_union,
• polyethylene_oxide,
• state_mediation,
• glass_slide,
• nonprofit,
• public_education,
• cup,
• hygiene,
• warfarin,
• oil_derrick,
• saturated_paper,
• kerosene,
• ido,
• bone_meal,
• jury,
• courthouse,
• glycerine,
• glutethimide,
• office,
• hydrocarbon_solvent,
• activity_center,
• ethanol,
• ammonium,
• enzyme,
• fish,
• drab_green,
• forest_lawn,
• glass,
• village,
• maltose,
• pure_water,
• brick,
• chrome,
• sulphate,
• light_orange,
• kitchen,
• wrist,
• international_organization,
• cellulose_sphere,
• belt,
• nitrate,
• ecru,
• large_field,
• professional_ethics,
• os,
• ammonium_acetate,
• alumina,
• coral,
• process_oil,
• desert,
• earth_center,
• tea,
• co2,
• referee,
• gray_card,
• conditional_stimulus,
• united_state,
• starch,
• conference_centre,
• large_polymer,
• darker_shade,
• inexpensive_restaurant,
• ca,
• college_campus,
• increased_triglyceride,
• classroom,
• plasma,
• vinblastine,
• stone,
• benzene,
• pva,
• sterol,
• thermal_neutron,
• ginger,
• financial_advisor,
• building_shade,
• chloride,
• playground,
• supervisor,
• salt,
• cracker,
• dilute_buttermilk,
• nearby_park,
• building,
• ketone,
• museum,
• partial_depression,
• elevator,
• consumer_magazine,
• lidocaine,
• terpene,
• tungsten_oxide,
• x_photon,
• polar_lipid,
• teacher,
• psychologist,
• alternative_workplace,
• dark_brown,
• government_organization,
• local_library,
• sterol_ester,
• syrup,
• carbon-dioxide_co2,
• xylene,
• nitrile,
• beef,
• public_sector,
• prison_library,
• natural_chelate,
• gray_building,
• grain,
• methanol,
• sugar,
• xylose,
• spoon,
• glycerin,
• sink,
• facilitator,
• gas,
• asphalt_roads,
• alkaline_salt,
• cod,
• employee_office,
• boardroom,
• email_address,
• ground,
• neighbor_yard,
• cardboard_box,
• oxygen,
• pet_resin,
• light_beige,
• cork,
• h2o,
• polysaccharide,
• sugar-cane_syrup,
• alkyne,
• court,
• glutamine,
• chair,
• common_salt,
• pollutant,
• dry_air,
• linear_sugar,
• mere_amount,
• illuminating_gas,
• bamboo,
• sweater,
• brass,
• cage,
• vaseline,
• booty_bay,
• air_molecule,
• official_language,
• area_planning,
• finger,
• polyethylene,
• nucleoside,
• si,
• title_company,
• hormone_fig,
• ni_gas,
• perchlorate,
• beach,
• royal_commission,
• mint_green,
• calcium_acetate,
• sodium_perchlorate,
• vegetable,
• kaon,
• silicon,
• salmon,
• cotton,
• official_ballot,
• xe,
• microwave,
• fructose,
• silica,
• ester,
• position,
• shop,
• light_charcoal,
• amber,
• natural_denim,
• ammonia,
• vinyl_acetate,
• crown_ether,
• living-room_floor,
• brown,
• seal,
• ne,
• contemporary_times,
• inert_gas,
• steroid_conjugate,
• extra_cage,
• friend_house,
• wooden_spoon,
• potassium,
• germanium,
• pub,
• sulfur_compound,
• wheat_meal,
• bone,
• aliphatic_alcohol,
• xenon,
• semiconductor,
• digoxin,
• speed,
• acetylene,
• tan,
• polystyrene_particle,
• radical,
• sport_coach,
• canteen,
• nucleotide,
• nuclear_english,
• ethylene,
• meth_acrylamide,
• titanium,
• pb,
• beautiful_beige,
• place,
• light_gray,
• sheep,
• arbitrator_office,
• citrus_juice,
• silicon_atom,
• scissors,
• mannitol,
• phosphoric_acid,
• job_title,
• air-conditioner_noise,
• university_professor,
• glycine,
• job,
• community_hall,
• lemon,
• fao,
• krypton,
• neutral_hadron,
• raffinose,
• glyceride_oil,
• propellant,
• beeper,
• monosaccharide,
• meat,
• landscape_picture,
• anhydride,
• black_brown,
• inn,
• serine,
• hard_palate,
• motel,
• no,
• aluminum,
• technical_college,
• caffeine,
• acetone,
• stellite,
• potato,
• population_size,
• pumice,
• water_fluid,
• violet_color,
• canvas,
• aunt,
• sn,
• derivative,
• wood,
• grey,
• phenytoin,
• school,
• warm_beige,
• imf,
• mocha,
• acetal,
• esophageal_site,
• land_owner,
• lecithin,
• denatured_alcohol,
• carboxylic_acid,
• investment_counsellor,
• hotel,
• dance,
• alcohol,
• sawdust,
• joy,
• constitutional_court,
• bar,
• lactic_acid,
• plain_cracker,
• minister,
• ring_particulate,
• metal_carbonyl,
• sodium_atom,
• bismuth_phosphate,
• bed,
• open_square,
• clofibrate,
• ultrasuede,
• tallow,
• burgundy,
• bell,
• stone_soap,
• carbohydrate,
• saline_pad,
• tantalum,
• downtown,
• public_document,
• concrete_tank,
• mediator,
• old_barrels,
• government_property,
• dry_hair,
• divorce_coach,
• neighborhood_sidewalk,
• ogre_lord,
• hydrophobic_peptide,
• problem,
• betaine,
• wire,
• ngo,
• church_pulpit,
• washing_basket,
• certain_derivative,
• meadow,
• milk_coffee,
• banquet_hall,
• juice,
• mediation_cabal,
• friendship_centre,
• washed_lard,
• city_facility,
• friend_garden,
• benzocaine,
• floor,
• mild_cheese,
• army,
• evaluator_office,
• weather_risk,
• valine,
• tea_staff,
• industrial_helium,
• conciliation_service,
• galactose,
• lithium_perchlorate,
• ocean_wave,
• clay,
• lobby,
• column,
• beige,
• news_site,
• street,
• counsellor,
• victim,
• x-ray_photon,
• magnesium_sulphate,
• garage_forecourt,
• public_space,
• potassium_sulfate,
• soy_lecithin,
• iron_fe,
• neutral_lipid,
• straight_sugar,
• sodium_salt,
• atomic_oxygen,
• phenolic,
• car,
• egg,
• united_nation,
• switch,
• keyboard_work,
• porcelain,
• standard_definition,
• chrome_oxide,
• welfare_office,
• secretariat,
• phosphate,
• acrylate,
• sunflower,
• wax,
• glyceride,
• rice,
• barbiturate,
• blue,
• counselor,
• company,
• oasis,
• gp_surgery,
• magnesium_chloride,
• sugar_sphere,
• turquoise_blue,
• azo_compound,
• private_meeting,
• cd,
• oolong_tea,
• obvious_landmark,
• sugar_pill,
• meprobamate,
• atmosphere,
• pencil,
• glass_vat,
• jet,
• alkali-metal_sulfate,
• black_slacks,
• embassy,
• atom,
• thistle_oil,
• petroleum,
• first_name,
• cysteine,
• canola,
• ar,
• child_therapist,
• international_committee,
• law,
• wall,
• relative,
• nucleotide_substitution,
• uracil,
• actinomycin,
• shirt,
• asparagine,
• cheese,
• hot_soup,
• cemetery,
• faa,
• favorite_teacher,
• medical_college,
• acrylamide,
• protein,
• white_oil,
• positron,
• table,
• inulin,
• cement_tank,
• work,
• financial_expert,
• synonymous_site,
• solvent,
• secondary_amine,
• white_screen,
• hub,
• bag,
• seascape,
• polo_top,
• alkali-metal_salt,
• dark_beige,
• test_center,
• hexose,
• trusted_aunt,
• solid_argon,
• local_restaurant,
• day-care_center,
• arrowroot_starch,
• ethyl_acrylate,
• syrup_beverage,
• garlic,
• orange_color,
• molybdenum_phosphate,
• endowment,
• green,
• sulfate,
• oil,
• violet,
• oxygen_molecule,
• hyphen_character,
• amide,
• service_committee,
• uncolored_concrete,
• police_report,
• dog_park,
• toxin,
• helium,
• plant,
• oolong,
• gold,
• charcoal,
• lithium_salt,
• meson,
• public_key,
• conference_facility,
• lipid,
• soda,
• state_university,
• resort,
• methyl,
• cafeteria,
• mercenary_camp,
• alkene,
• orange,
• sodium-sulfate_anhydride,
• primary,
• perfume,
• bottom-quark_meson,
• comb,
• bathtub,
• phenol,
• natural_daylight,
• cleaning_liquid,
• cytokine,
• short_trouser,
• xanthine,
• work_site,
• metal,
• neutrino,
• acetate,
• vanilla,
• spare_cage,
• outside_building,
• squirrel,
• proverb_collection,
• benzyl_alcohol,
• similar_body,
• outer_space,
• pasta,
• native_starch,
• pet_store,
• design,
• white_colors,
• risk,
• color_singlet,
• white_card,
• office_lobby,
• ether,
• wooden_stick,
• cellulose_membrane,
• tavern,
• dmz,
• alkali-metal_chloride,
• cholesterol,
• isoleucine,
• city_building,
• cerebellum,
• methyl_acrylate,
• pork_prohibition,
• kr,
• arena_wall,
• lawyer,
• consumer_report,
• carpeting,
• button,
• senior_center,
• deep_green,
• sisal,
• issuer,
• light,
• raw_sienna,
• foundation,
• shoe_box,
• navy,
• nist,
• civilian,
• argon_ar,
• earth,
• pion,
• sodium,
• jean,
• bathroom,
• accountant,
• ground_path,
• remote,
• trypsin,
• english,
• public_agency,
• atmospheric_neutron,
• amine,
• nearby_restaurant,
• ammonium_sulfate,
• business,
• single_atom,
• compressed_air,
• crayon,
• proline,
• ion,
• hard_x-ray,
• white_blouse,
• bathroom_drain,
• active_neutrino,
• state_agency,
• mung-bean_drink,
• molecule,
• physiological_saline,
• old_lady,
• cellulose_derivative,
• ground-state_atom,
• mercury,
• small_house,
• potassium_glutamate,
• olive,
• parole_board,
• restaurant,
• finance_test,
• open-air_site,
• condiment,
• indigo,
• steel,
• he,
• air,
• trade_association,
• pink,
• community,
• disaccharide,
• hydrocarbon,
• rest,
• ear,
• polyurethane_resin,
• arts,
• neutral_atom,
• ni,
• chitin,
• stuffed_dog,
• aldehyde,
• daycare_centre,
• tumbleweed,
• uranyl_acetate,
• x-ray,
• x,
• halfway_point,
• mg,
• bitumen,
• common,
• house_garden,
• manganese_mn,
• coffeehouse,
• milk,
• federal_government,
• straw,
• ivory,
• excited_species,
• sky,
• priest,
• smaller_town,
• linen,
• saccharin,
• environment_agency,
• sucrose,
• police,
• ammonium_sulphate,
• pure_alcohol,
• magnetite,
• airport,
• burnt_umber,
• professional,
• room,
• district_court,
• community_foundation,
• plant_sterol,
• strawberry,
• city_street,
• shoes,
• pen,
• bread,
• friend_yard,
• dark_velvet,
• slacks,
• hr_department,
• hydrogen,
• shrine,
• binder,
• public_center,
• greenish_gray,
• gray,
• arachis_oil,
• ge,
• ammonium_halide,
• glass_cleaning,
• cdc,
• explanation,
• church,
• family_member,
• family_centre,
• ne_atom,
• local_community,
• casein,
• pet-food_store,
• clergy_member,
• yb,
• school_counselor,
• heavier_elements,
• mirror,
• gamma_photon,
• pentose,
• earthy_green,
• scandinavian,
• improper_copper,
• lard,
• pale_green,
• dry_toast,
• milk_tea,
• marketplace,
• extension_worker,
• kieselguhr,
• ribose,
• methyl_cellulose,
• amino_sugar,
• student_common,
• polenta,
• health_worker,
• coke,
• pvc_resin,
• polls,
• local_administration,
• professor,
• painted_stripe,
• water_molecule,
• public_building,
• lithium_bromide,
• navy-blue_color,
• naphthalene,
• light_wall,
• chromium_cr,
• icc,
• zn,
• coffee,
• box,
• financial_professional,
• chapter,
• hexane,
• gamma-ray_photon,
• tree,
• board,
• meeting_hall,
• hobby,
• click,
• black,
• raw_vegetable,
• silt,
• college,
• state,
• aromatic_hydrocarbon,
• open_wilderness,
• meeting,
• sclera,
• yellow,
• natural_gas,
• mitre,
• nobel_gas,
• ethyl_lactate,
• hot_milk,
• pepsi_center,
• olefin,
• local_park,
• strength,
• normal_saline,
• taurine,
• city,
• education,
• standard,
• alkali-metal_halide,
• sodium_acetate,
• child_specialist,
• lactose,
• isolated_copper,
• land-grant_university,
• emission_standard,
• school_hall,
• phenylalanine,
• fat,
• inquiry,
• public_park,
• swimming,
• inositol,
• ky_jelly,
• neutral_pion,
• kaolin,
• community_perch,
• noble_gas,
• toluene,
• space,
• rabbit,
• outpost,
• paraffin,
• madison_square,
• tea_drink,
• government,
• mesh,
• health_centre,
• esperanto,
• historical_data,
• resin,
• pinky_brown,
• travel,
• baryon,
• alanine,
• white_sheet,
• gas_molecule,
• earth_atmosphere,
• turquoise,
• thin_foil,
• steroid,
• cream,
• local_mall,
• nitric_oxide,
• foyer,
• zinc_chloride,
• private_office,
• club,
• nitrogen,
• mirror_lepton,
• java,
• community_centre,
• gray_glass,
• cellulose,
• light_blue,
• employee_break,
• sb,
• satin,
• diazepam,
• homey_smell,
• phenol_derivative,
• education_standard,
• craft,
• white_wall,
• financial_institution,