Modifiers matching catastrophe:

• major,
• unforeseeable,
• climatic,
• astronomical,
• natural,
• massive,
• single,
• environmental,
• widespread,
• sudden,
• possible,
• world,
• smaller,
• mental,
• powerful,
• individual,
• ecological,
• unnatural,
• future,
• related,
• local,
• small,
• unforeseen,
• unpredictable,
• extreme,
• large,
• geophysical,
• infrequent,
• domestic,
• humanitarian,
• physical,
• cosmic,
• regional,
• past,
• unexpected,
• worldwide,
• horrible,
• national,
• global,
• big,
• wide,
• violent,
• external,
• nuclear,
• localized,
• biblical,
• recent,
• extraordinary,
• devastating,
• real,
• random,
• dramatic,
• bad,
• social,
• political,
• temporary,
• predictable,
• terrible,
• european,
• unavoidable,
• economic,
• periodic,
• weather,
• significant,
• underlying,
• specified,

Simple categories matching infrequent:

• event,
• occurrence,
• organelle,
• process,
• fire,
• activity,
• cause,
• morbidity,
• episode,
• symptom,
• movement,
• occasion,
• expenditure,
• catastrophe,
• disturbance,
• hazard,
• relationship,