Modifiers matching occurrence:

• unforeseen,
• natural,
• unpleasant,
• acoustic,
• dramatic,
• local,
• unusual,
• corporeal,
• infrequent,
• unplanned,
• terrifying,
• unexpected,
• dangerous,
• discrete,
• external,
• relevant,
• deadly,
• internal,
• routine,
• sudden,
• unforeseeable,
• serious,
• normal,
• supernatural,
• rare,
• catastrophic,
• unavoidable,
• physical,
• devastating,
• accidental,
• small,
• unpredictable,
• unfortunate,
• neurological,
• organizational,
• planned,
• major,
• benign,
• disastrous,
• dynamic,
• random,
• unlikely,
• extreme,
• unanticipated,
• strange,
• geologic,
• ordinary,
• exogenous,
• everyday,
• autonomic,
• uncertain,
• significant,
• weather,
• superficial,
• specified,
• happy,
• operational,
• political,
• localised,
• severe,
• interactive,
• recent,
• single,
• commonplace,
• positive,
• future,
• periodic,
• transient,
• unwanted,
• abnormal,
• adverse,
• undesirable,
• special,
• negative,
• inanimate,
• harmful,
• outside,
• irregular,
• possible,
• damaging,
• tragic,
• astronomical,
• awesome,
• geographical,
• violent,
• unique,
• social,
• simple,
• cosmic,
• cataclysmic,
• hazardous,
• stressful,
• meaningful,
• historical,
• extraordinary,
• motivational,
• seasonal,
• common,
• annual,
• temporary,
• exceptional,
• deviant,
• traumatic,
• miscellaneous,
• spontaneous,
• elemental,
• musical,
• medical,
• costly,
• seismic,
• criminal,
• climatic,
• interesting,
• disruptive,
• odd,
• untoward,
• environmental,
• neurologic,
• outdoor,

Simple categories matching traumatic:

• complication,
• procedure,
• event,
• injury,
• implantation,
• emotion,
• experience,
• crime,
• disorder,
• memory,
• situation,
• evidence,
• laceration,
• incident,
• case,
• treatment,
• thing,
• feeling,
• disaster,
• lesion,
• wound,
• cause,
• impairment,
• trauma,
• episode,
• disease,
• accident,
• condition,
• intervention,
• force,
• crisis,
• noise,
• reaction,
• occurrence,
• cue,
• death,
• illness,
• happening,
• harm,