Modifiers matching stimulus:

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

Simple categories matching painful:

• mind,
• experience,
• condition,
• procedure,
• discomfort,
• thing,
• neuropathy,
• emotion,
• symptom,
• feeling,
• action,
• swelling,
• sensation,
• change,
• disease,
• disorder,
• state,
• stimulus,
• illness,
• area,
• effect,
• episode,
• lesion,
• therapy,
• test,
• malady,
• movement,
• event,
• treatment,
• structure,
• measure,
• investigation,
• lump,
• situation,
• syndrome,
• entity,
• issue,
• transition,
• surgery,
• tumor,
• intervention,
• disturbance,
• affection,
• pathology,
• practice,
• feelings,
• way,
• problem,
• incident,
• task,
• affliction,
• period,
• consequence,
• complication,
• process,