Modifiers matching accident:

• serious,
• violent,
• nuclear,
• physical,
• genetic,
• small,
• external,
• working,
• bad,
• major,
• military,
• cerebral,
• secondary,
• industrial,
• marine,
• electrical,
• future,
• vascular,
• fatal,
• electric,
• operational,
• technological,
• unfortunate,
• neurologic,
• supporting,
• harsh,
• conventional,
• natural,
• shocking,
• catastrophic,
• traumatic,
• significant,
• minor,
• unexpected,
• unintentional,
• historical,
• massive,
• sudden,
• preventable,
• lethal,
• internal,
• common,
• related,
• mechanical,
• uncommon,
• simple,
• isolated,
• disastrous,
• medical,
• unpredictable,
• unforeseen,
• dramatic,
• hazardous,
• single,
• terrible,
• severe,
• random,
• tragic,
• interior,
• dangerous,
• unusual,
• personal,
• possible,
• vehicular,
• previous,
• big,
• civil,
• agricultural,
• everyday,
• cerebrovascular,
• maritime,

Simple categories matching unpredictable:

• problem,
• event,
• situation,
• process,
• domain,
• contingency,
• risk,
• hazard,
• episode,
• occurrence,
• disturbance,
• force,
• thing,
• break,
• action,
• change,
• weather,
• illness,
• disruption,
• noise,
• condition,
• incident,
• object,
• catastrophe,
• circumstances,
• elements,
• cause,
• storm,
• disease,
• fluctuation,
• signal,
• sound,
• phenomenon,
• blessing,
• disorder,
• behaviour,
• shock,
• accident,
• danger,
• motion,
• system,
• misfortune,
• upheaval,
• current,
• disaster,