Modifiers matching difficulty:

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

Simple categories matching external:

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