Modifiers matching stimulus:

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

Simple categories matching biological:

• function,
• material,
• behaviour,
• fuel,
• process,
• factor,
• science,
• motion,
• molecule,
• boundary,
• brain,
• fluid,
• enzyme,
• solid,
• identification,
• chemistry,
• rhythm,
• study,
• polymer,
• reaction,
• arts,
• system,
• target,
• force,
• lipid,
• tissue,
• substance,
• machinery,
• disposition,
• toxin,
• macromolecule,
• group,
• pathogen,
• age,
• grouping,
• element,
• aspect,
• gel,
• container,
• amine,
• space,
• signal,
• pigment,
• flow,
• contaminant,
• glue,
• sector,
• problem,
• fertilizer,
• carrier,
• magnitude,
• action,
• network,
• culture,
• medium,
• assay,
• source,
• precursor,
• interaction,
• part,
• offspring,
• diversity,
• phase,
• work,
• intervention,
• activator,
• sugar,
• activity,
• disorder,
• assemblage,
• industry,
• specimen,
• description,
• fibre,
• matter,
• weapon,
• organisation,
• duct,
• coating,
• item,
• microbe,
• compartment,
• significance,
• drug,
• artifact,
• concept,
• terms,
• buffer,
• filament,
• area,
• illness,
• characteristic,
• constituent,
• control,
• pest,
• processing,
• effector,
• body,
• stress,
• relationship,
• vocation,
• parameter,
• content,
• ontology,
• waste,
• surroundings,
• discipline,
• reason,
• improvement,
• pesticide,
• secretion,
• passage,
• organs,
• result,
• origin,
• form,
• plant,
• noise,
• phenomenon,
• change,
• environment,
• performance,
• indicator,
• filter,
• catalyst,
• testing,
• shape,
• category,
• response,
• sensor,
• test,
• stimulant,
• sex,
• situation,
• frontier,
• ingredient,
• variation,
• fiber,
• evolution,
• layer,
• agent,
• end,
• matrix,
• quantity,
• task,
• danger,
• resource,
• ligand,
• information,
• preparation,
• motive,
• phenotype,
• individual,
• inquiry,
• hazard,
• times,
• fibril,
• kin,
• criterion,
• adhesive,
• surface,
• conduit,
• membrane,
• issue,
• data,
• relic,
• member,
• benefit,
• invasion,
• knowledge,
• domain,
• reservoir,
• complication,
• condition,
• fertiliser,
• species,
• product,
• society,
• field,
• asymmetry,
• sample,
• surfactant,
• poison,
• disturbance,
• drive,
• option,
• consequence,
• aggregate,
• operator,
• chemical,
• particulate,
• behavior,
• complex,
• sequence,
• cofactor,
• infection,
• parent,
• variable,
• cycle,
• memory,
• level,
• interest,
• father,
• assembly,
• subject,
• feature,
• application,
• mineral,
• works,
• protein,
• unit,
• analysis,
• limb,
• polysaccharide,
• irregularity,
• treatment,
• consideration,
• mechanism,
• defect,
• modification,
• community,
• solution,
• success,
• constraint,
• evidence,
• creature,
• pathway,
• contamination,
• liquid,
• vessel,
• appendage,
• residue,
• nutrient,
• notion,
• machine,
• alcohol,
• stimulus,
• act,
• integrity,
• relative,
• character,
• mixture,
• composition,
• project,
• insulator,
• textile,
• research,
• maturation,
• trait,
• entity,
• measurement,
• swarm,
• detector,
• therapy,
• world,
• difference,
• engineering,
• impurity,
• component,
• attribute,
• quality,
• medication,
• organization,
• particle,
• object,
• disease,
• trauma,
• passageway,
• effect,
• cause,
• thing,
• team,
• structure,
• state,
• property,
• compound,
• index,
• cell,
• nature,
• chamber,
• variant,
• necessity,
• substrate,
• pattern,
• means,
• anion,
• sludge,
• development,
• damage,
• scientist,
• profession,
• event,
• food,
• procedure,
• topic,
• measure,
• abnormality,
• anticoagulant,
• marker,
• technology,
• microorganism,
• organism,
• antioxidant,
• tendency,
• movement,
• program,
• sound,
• concretion,