Modifiers matching episode:

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

Simple categories matching sudden:

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