Modifiers matching occurrence:

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

Simple categories matching adverse:

• event,
• movement,
• outcome,
• condition,
• illness,
• agent,
• reaction,
• weather,
• behaviour,
• influence,
• phenomenon,
• pollution,
• consequence,
• property,
• action,
• elements,
• information,
• circumstances,
• occurrence,
• contingency,
• stimulus,
• behavior,
• news,
• shock,
• measure,
• symptom,
• situation,
• activity,
• incident,
• emotion,
• state,
• structure,
• pressure,
• effect,
• change,
• impact,
• experience,
• temperament,