English Reference
adjective · adverb · noun

sudden

adj. · adv. · n.
US /ˈsədən/ UK /sˈʌdən/ sud·den UK spelling suddens

  1. 01 B1 Intermediate

    adj.happening or done quickly and without warning.

    adj.occurring, arriving, or performed unexpectedly and without prior notice.

    Simple

    A sudden rain shower caught the hikers without their jackets.

    In context

    The sudden resignation of the chief executive left the board of directors scrambling to find a suitable interim replacement before the markets opened.

    Pitfall
    The car made a suddenly stop. The car made a sudden stop.

    Use the adjective 'sudden' to describe a noun like 'stop'. Use the adverb 'suddenly' to describe an action.

  2. 02 B1 Intermediate

    adv.used in the phrase 'all of a sudden' to mean 'suddenly'.

    adv.functioning as an adverbial component, almost exclusively within the idiomatic prepositional phrase 'all of a sudden'.

    Simple

    All of a sudden, the lights went out and the room was dark.

    In context

    The engine began to make a rhythmic clicking sound and then, all of a sudden, the entire vehicle shuddered and came to a halt.

  3. 03 C2 Proficiency Literary

    adv.a poetic way to say 'suddenly'.

    adv.used as a flat adverb in poetic or highly literary contexts to denote an abrupt occurrence.

    Simple

    Sudden, the wind changed and the sails began to flap.

    In context

    Sudden there came a tapping, as of some one gently rapping at my chamber door.

  4. 04 C2 Proficiency Archaic

    n.a surprise or something that happens without warning.

    n.an unexpected or abrupt occurrence; now largely restricted to the fixed phrase 'on a sudden'.

    Simple

    The news came upon them on a sudden.

    In context

    The arrival of the messenger on a sudden threw the entire household into a state of frantic preparation.

Usage incorporation sudden · sudden challenge


From Middle English sodeyn, sodain, from Anglo-Norman sodein, from Old French sodain, subdain (“immediate, sudden”), from Vulgar Latin *subitānus (“sudden”), from Latin subitāneus (“sudden”), from subitus (“sudden", literally, "that which has come stealthily”), originally the past participle of subīre (“to come or go stealthily”), from sub (“under”) + īre (“go”). Doublet of subitaneous. Displaced native Old English fǣrlīċ.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Middle English sodeyn
Level B1 · Intermediate
Frequency Common
Updated