Modifiers matching episode:

• acute,
• related,
• medical,
• traumatic,
• interesting,
• chaotic,
• symptomatic,
• historical,
• unpredictable,
• geological,
• physiological,
• negative,
• memorable,
• catastrophic,
• past,
• single,
• neurological,
• biblical,
• stressful,
• exciting,
• criminal,
• new,
• special,
• disastrous,
• tectonic,
• infrequent,
• cardiovascular,
• tragic,
• meteorological,
• painful,
• periodic,
• unfortunate,
• violent,
• textual,
• ischaemic,
• major,
• volcanic,
• sudden,
• multiple,

Simple categories matching sudden:

• calamity,
• event,
• trauma,
• disorder,
• change,
• weather,
• catastrophe,
• emotion,
• phenomenon,
• move,
• transformation,
• noise,
• emergency,
• death,
• infection,
• action,
• motivation,
• movement,
• feeling,
• disaster,
• pressure,
• tragedy,
• accident,
• occurrence,
• development,
• condition,
• discharge,
• incident,
• bang,
• episode,
• setback,
• shift,
• pain,
• attack,
• sound,
• experience,
• mishap,
• illness,
• force,
• process,
• epidemic,
• injury,
• problem,
• turbulence,
• threat,
• failure,
• impact,
• shock,
• motion,
• situation,
• symptom,
• reversal,
• disturbance,
• light,
• cause,
• misfortune,
• collapse,