sudden /ˈsʌd.ən/adjective 3adverb 1noun 1forms 5 adjective3 •happening very fast and without any warningThe sudden drop in temperature left everyone cold and confused. •(no longer used) Hastily prepared or employed; quick; rapid.Never was such a sudden scholar made. — 1599 •(no longer used) Hasty; violent; rash; precipitate.I have no joy of this contract to-night: / It is too rash, too unadvised, too sudden — 1591 adverb1 •(literary) Suddenly.Herbs of every leaf that sudden flowered. — 1667 noun1 •(no longer used) An unexpected occurrence; a surprise. formssuddens · more sudden · suddener · most sudden · suddenest