Modifiers matching stimulus:

• stressful,
• biological,
• external,
• transient,
• artificial,
• ambient,
• noxious,
• extracellular,
• social,
• distinct,
• pictorial,
• sensory,
• real,
• internal,
• chronic,
• rhythmic,
• stimulating,
• monotonous,
• local,
• cellular,
• psychic,
• visual,
• mechanical,
• old,
• detrimental,
• physiological,
• subtle,
• painful,
• auditory,
• complex,
• aversive,
• intense,
• adverse,
• physiologic,
• light,
• damaging,
• individual,
• instructional,
• harmful,
• special,
• pathological,
• inflammatory,
• innocuous,
• simple,
• cytotoxic,
• unpleasant,
• noninfectious,
• abnormal,
• prolonged,
• strong,
• physical,
• familiar,
• exogenous,
• mental,
• multiple,
• distressing,
• peripheral,
• constant,
• chemical,
• standard,
• subjective,
• electrical,
• nonspecific,
• diverse,
• identifiable,
• organizational,
• pathologic,
• negative,
• major,
• rewarding,
• emotional,
• maternal,
• outside,
• natural,
• extraneous,
• positive,
• neutral,
• supplemental,
• temporal,
• environmental,

Simple categories matching internal:

• organs,
• stimulation,
• evil,
• funds,
• state,
• agreement,
• danger,
• energy,
• process,
• analysis,
• parasite,
• discipline,
• tax,
• structure,
• cavity,
• accident,
• wall,
• connection,
• document,
• capability,
• part,
• cognition,
• undercut,
• papers,
• grouping,
• attribute,
• event,
• quality,
• trait,
• engine,
• disturbance,
• representation,
• equipment,
• violence,
• failure,
• research,
• cause,
• rule,
• thought,
• standard,
• source,
• training,
• closet,
• delay,
• review,
• mechanism,
• flow,
• manual,
• modification,
• ailment,
• fraud,
• belief,
• makeup,
• certificate,
• goodness,
• deposit,
• program,
• flaw,
• target,
• error,
• policy,
• assets,
• image,
• environment,
• expert,
• data,
• issue,
• analgesic,
• thing,
• pull,
• network,
• correspondence,
• tool,
• secret,
• shock,
• communication,
• diet,
• change,
• extra,
• evidence,
• member,
• deformation,
• interaction,
• happening,
• service,
• substrate,
• section,
• appliance,
• illness,
• complication,
• fluid,
• medicine,
• move,
• defect,
• instability,
• propensity,
• incident,
• space,
• discussion,
• initiative,
• effort,
• abnormality,
• stress,
• option,
• motion,
• action,
• requirement,
• disposition,
• job,
• passion,
• worm,
• mode,
• discomfort,
• instrument,
• boundary,
• artery,
• user,
• malady,
• alarm,
• customer,
• trauma,
• problem,
• grievance,
• taxation,
• processing,
• reward,
• desire,
• occurrence,
• challenge,
• protection,
• machinery,
• domain,
• accessory,
• presentation,
• point,
• product,
• knowledge,
• constraint,
• memory,
• fitting,
• behavior,
• organ,
• format,
• stain,
• adversary,
• administration,
• status,
• dryness,
• coolant,
• publication,
• relationship,
• area,
• punctuation,
• trouble,
• database,
• advisor,
• tissue,
• struggle,
• stimulus,
• complaint,
• workshop,
• practice,
• form,
• cooling,
• infection,
• heater,
• variation,
• audience,
• function,
• arrangement,
• shelter,
• feature,
• symptom,
• page,
• body,
• bracket,
• safety,
• effector,
• sensitivity,
• decay,
• host,
• uncertainty,
• protein,
• communicator,
• improvement,
• characteristic,
• record,
• conductor,
• cue,
• metric,
• motivation,
• cutout,
• mission,
• motor,
• threat,
• difficulty,
• variable,
• transport,
• response,
• gear,
• marker,
• impediment,
• disorder,
• crime,
• aid,
• degradation,
• antigen,
• objective,
• modem,
• defense,
• circuit,
• content,
• operation,
• dimension,
• register,
• devices,
• operations,
• seal,
• malignancy,
• relations,
• works,
• authority,
• division,
• cancer,
• metrics,
• organisation,
• plan,
• location,
• formation,
• pain,
• property,
• pressure,
• group,
• coating,
• graphics,
• vein,
• injury,
• oddity,
• component,
• charge,
• definition,
• volume,
• piece,
• information,
• examination,
• means,
• attachment,
• phenomenon,
• upset,
• condition,
• region,
• test,
• symmetry,
• cost,
• project,
• card,
• agent,
• conflict,
• surface,
• resource,
• department,
• communications,
• masonry,
• hazard,
• movement,
• room,
• expenditure,
• activity,
• transmission,
• repair,
• treatment,
• fitment,
• sensation,
• sensor,
• difference,
• surgery,
• temperature,
• committee,
• losses,
• system,
• device,
• signal,
• scrutiny,
• interface,
• survey,
• application,
• reference,
• landmark,
• material,
• entity,
• membrane,
• gland,
• meeting,
• work,
• task,
• computation,
• fixture,
• block,
• celebration,
• noise,
• passageway,
• anomaly,
• anatomy,
• clue,
• comment,
• reservoir,
• reaction,
• party,
• sanction,
• control,
• responsibility,
• report,
• migration,
• criterion,
• shape,
• power,
• measure,
• experience,
• composition,
• shaft,
• scholarship,
• decoration,
• usage,
• institution,
• team,
• bus,
• dealings,
• use,
• trigger,
• education,
• sound,
• hardware,
• object,
• installation,
• news,
• development,
• agency,
• matter,
• inflammation,
• tumor,
• factor,
• interest,
• documentation,
• pest,
• residue,
• situation,
• management,
• facility,
• office,
• personnel,
• faculty,
• tolerance,
• resistance,
• heterotroph,
• force,
• purpose,
• risk,
• unit,
• model,
• parameter,
• support,
• procedure,
• goal,
• motive,
• restriction,
• fault,
• dispute,
• helminth,
• server,
• magnitude,
• peripheral,
• values,
• feeling,
• store,
• influence,
• topology,
• wart,
• limitation,
• value,
• study,
• drive,
• constituency,
• forecast,
• market,
• adjustment,
• sense,
• neoplasm,
• organelle,
• contamination,
• item,
• relay,
• imperfection,
• revolt,
• regulation,
• performance,
• code,
• obstruction,
• substance,
• mood,
• tuner,
• emotion,
• passage,
• disease,
• assembly,
• measurement,
• quantity,
• happiness,
• message,
• gatekeeper,
• organization,
• medium,
• number,
• growth,
• dissipation,