Modifiers matching difficulty:

• psychological,
• minor,
• common,
• emotional,
• stressful,
• neuropsychiatric,
• acute,
• serious,
• extraneous,
• neurological,
• personal,
• physical,
• subjective,
• hormonal,
• major,
• computational,
• parental,
• prevalent,
• secondary,
• underlying,
• mechanical,
• psychiatric,
• academic,
• operational,
• respiratory,
• behavioural,
• educational,
• financial,
• conceptual,
• regulation,
• unusual,
• temporary,
• chronic,
• interpersonal,
• reproductive,
• external,
• particular,
• extreme,
• everyday,
• spiritual,
• traditional,
• severe,
• administrative,
• single,
• technological,
• ongoing,
• practical,
• domestic,
• somatic,
• surgical,
• visual,
• unforeseen,
• unanticipated,
• social,
• sexual,
• habitual,
• linguistic,
• past,
• cognitive,
• anatomical,
• related,
• persistent,
• commercial,
• progressive,
• smaller,
• behavioral,
• maternal,
• real,
• functional,
• possible,
• unexpected,
• economic,
• basic,
• experienced,
• periodic,
• home,
• invisible,
• mental,
• structural,
• natural,
• stable,
• logistical,
• mathematical,
• experimental,
• special,
• clinical,
• sensory,
• perceptual,
• concurrent,
• extra,
• environmental,
• motor,
• developmental,
• technical,
• important,
• nutritional,
• legal,
• leaning,
• internal,
• typical,
• local,
• significant,

Simple categories matching external:

• defence,
• wall,
• facility,
• device,
• force,
• measure,
• entity,
• vocabulary,
• sign,
• keyboard,
• layer,
• hole,
• parasite,
• event,
• disorder,
• assembly,
• brace,
• cause,
• occurrence,
• installation,
• translator,
• equipment,
• container,
• expenditure,
• trauma,
• reinforcement,
• devices,
• edge,
• charge,
• part,
• experience,
• property,
• alteration,
• organism,
• object,
• issue,
• arrangement,
• losses,
• covering,
• constituent,
• regulation,
• lubricant,
• communications,
• representation,
• deeds,
• duty,
• connection,
• gear,
• delay,
• liquid,
• reflector,
• water,
• revenue,
• bearing,
• assessment,
• lesion,
• hazard,
• organ,
• product,
• database,
• evidence,
• demand,
• connector,
• chemical,
• remedy,
• opening,
• profession,
• worship,
• mbd,
• survey,
• incentive,
• appearance,
• furniture,
• risk,
• project,
• examination,
• boundary,
• substrate,
• input,
• client,
• fluid,
• surgery,
• gatekeeper,
• sunshade,
• topic,
• filter,
• annex,
• reaction,
• perturbation,
• rhythm,
• person,
• change,
• status,
• fastener,
• attachment,
• governance,
• constraint,
• guide,
• supplier,
• trustee,
• mike,
• scheme,
• time,
• move,
• personnel,
• difficulty,
• sample,
• rite,
• antioxidant,
• component,
• problem,
• measurement,
• door,
• party,
• emulsifier,
• cost,
• work,
• sound,
• terminal,
• motive,
• thing,
• expertise,
• circuitry,
• package,
• enterprise,
• graphics,
• instrument,
• dielectric,
• professional,
• symbol,
• operations,
• sensor,
• illumination,
• genitalia,
• consultant,
• motivation,
• sense,
• authority,
• lens,
• processor,
• fabric,
• picture,
• info,
• specialist,
• modem,
• excursion,
• malformation,
• institution,
• deadline,
• agency,
• ulcer,
• behavior,
• condition,
• extremity,
• matter,
• coupling,
• microorganism,
• marking,
• attribute,
• treatment,
• variable,
• incident,
• document,
• expense,
• canal,
• token,
• interface,
• variance,
• mass,
• morphology,
• field,
• indication,
• affiliation,
• uncertainty,
• artefact,
• interaction,
• communicator,
• indicator,
• area,
• customer,
• toxin,
• address,
• course,
• variation,
• munition,
• system,
• rule,
• fraud,
• information,
• contributor,
• decoration,
• manifestation,
• clock,
• speaker,
• port,
• coalition,
• conflict,
• energy,
• pollutant,
• drive,
• artery,
• trigger,
• attempt,
• look,
• disease,
• sanction,
• undercut,
• text,
• contingency,
• protocol,
• agreement,
• peripheral,
• location,
• computer,
• dosimeter,
• disaster,
• format,
• fascia,
• defect,
• market,
• stress,
• collaborator,
• panel,
• host,
• activity,
• apparatus,
• article,
• effect,
• judgment,
• fee,
• camera,
• calendar,
• audit,
• reference,
• radiation,
• resource,
• network,
• means,
• gradient,
• closure,
• form,
• shape,
• substance,
• supply,
• folder,
• content,
• microphone,
• currency,
• protein,
• asceticism,
• conductor,
• danger,
• power,
• ornament,
• intellectual,
• stakeholder,
• authorities,
• carrier,
• shell,
• presentation,
• creditor,
• directory,
• individual,
• adviser,
• sickness,
• training,
• disturbance,
• criterion,
• space,
• insulator,
• transport,
• metric,
• scrutiny,
• barrier,
• bus,
• library,
• portion,
• joint,
• requirement,
• partner,
• causality,
• store,
• ingredient,
• circumstances,
• behaviour,
• waste,
• instrumentation,
• parameter,
• crime,
• file,
• world,
• administration,
• crisis,
• advisor,
• pump,
• links,
• loan,
• sector,
• corrosive,
• environment,
• relationship,
• stimulus,
• index,
• production,
• relations,
• organisation,
• audience,
• pursuit,
• process,
• impediment,
• exam,
• ornamentation,
• appliance,
• distribution,
• reservoir,
• machine,
• testing,
• surroundings,
• server,
• phone,
• distributor,
• opiate,
• circumstance,
• transponder,
• law,
• tissue,
• medium,
• service,
• impact,
• cable,
• support,
• documentation,
• cancer,
• function,
• contaminant,
• shock,
• financing,
• housing,
• dimension,
• disk,
• dependency,
• help,
• cooling,
• amplifier,
• fixture,
• request,
• tax,
• cue,
• obstacle,
• infection,
• limit,
• competition,
• organization,
• distinction,
• control,
• regulator,
• resistance,
• reminder,
• volume,
• display,
• projection,
• website,
• key,
• knowledge,
• action,
• place,
• funding,
• lighting,
• lense,
• protection,
• trait,
• aggression,
• composition,
• weapon,
• even,
• stuff,
• switch,
• appurtenance,
• protuberance,
• molecule,
• observer,
• direction,
• source,
• item,
• therapy,
• detector,
• identifier,
• medicine,
• lubrication,
• mode,
• heater,
• scene,
• commitment,
• circuit,
• group,
• card,
• user,
• alarm,
• site,
• quality,
• payment,
• clothing,
• image,
• marker,
• construction,
• inspector,
• finish,
• repair,
• solute,
• registry,
• finishing,
• fact,
• guidance,
• constituency,
• abnormality,
• practice,
• review,
• command,
• fitting,
• furnishing,
• transactions,
• pedal,
• signifier,
• signal,
• damage,
• cure,
• auditor,
• use,
• excitation,
• organs,
• building,
• epithelium,
• promotion,
• stimulation,
• memory,
• deformation,
• domain,
• reader,
• wound,
• alliance,
• blemish,
• committee,
• liabilities,
• programmer,
• works,
• light,
• secretion,
• discharge,
• assets,
• communication,
• error,
• tuner,
• improvement,
• characteristic,
• medication,
• investor,
• contamination,
• policy,
• expert,
• structure,
• landmark,
• colleague,
• restraint,
• symptom,
• obstruction,
• editor,
• possession,
• restriction,
• preparation,
• data,
• validation,
• quantity,
• body,
• line,
• imperfection,
• combustion,
• report,
• development,
• injury,
• provider,
• association,
• mortification,
• material,
• sensation,
• filament,
• benefit,
• catastrophe,
• instrumentality,
• evaluation,
• influence,
• box,
• pressure,
• telephone,
• software,
• pathogen,
• accident,
• concern,
• award,
• extra,
• transmitter,
• recorder,
• vendor,
• reward,
• wart,
• accommodation,
• appendage,
• perception,
• grant,
• reason,
• elements,
• program,
• heat,
• educator,
• fault,
• tool,
• option,
• surface,
• meeting,
• catalyst,
• air,
• mirror,
• particle,
• consideration,
• statement,
• piece,
• facilitator,
• desire,
• intervention,
• feeder,
• interference,
• coating,
• pain,
• accessory,
• hardware,
• mission,
• tag,
• phenomenon,
• factor,
• illness,
• cover,
• difference,
• actuator,
• name,
• company,
• gas,
• adapter,
• hydatid,
• utilisation,
• pest,
• feature,
• aid,
• load,
• language,
• expression,
• receptor,
• carcinogen,
• standard,
• threat,
• ligand,
• mechanism,
• evil,
• cell,
• controller,
• motivator,
• unit,
• motion,
• goal,
• application,
• fellowship,
• agent,
• anomaly,
• participant,
• publication,
• assistance,
• pc,
• attraction,
• thesaurus,
• module,
• noise,
• artifact,
• storage,
• driver,