adverb

suddenly

Quickly and unexpectedly.

The lights suddenly go out while we are eating dinner.

Etymology

Suddenly is formed from sudden, whose older meaning concerns an unexpected occurrence. The adverb combines abrupt timing with lack of anticipation.

More examples

  • She suddenly remembers where she left her keys.
  • A deer suddenly darts across the road.
  • The quiet room suddenly fills with laughter.

Forms

suddenly

sudden adjective — Happening quickly and without warning.

Similar words

abruptly
Emphasizes a sharp break rather than an unexpected occurrence.
unexpectedly
Emphasizes surprise without necessarily suggesting a rapid change.