Modifiers matching occurrence:

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

Simple categories matching unavoidable:

• hazard,
• situation,
• activity,
• event,
• injury,
• condition,
• conflict,
• contingency,
• occurrence,
• hardship,
• circumstance,
• cause,
• death,
• error,
• problem,
• catastrophe,
• mishap,
• impurity,
• force,
• danger,
• circumstances,
• matter,
• reason,
• predator,
• incident,
• phenomenon,