|part of speech:
||happening without notice or warning; not expected.
A sudden noise frightened us.
- abrupt, surprising
||sharp, quick or abrupt.
I made a sudden turn into the traffic.There was a sudden change in her mood.
- abrupt, rapid, sharp
- similar words:
- hasty, immediate, impetuous, instant, quick, rash, swift
||flash, impulsive, rapid, snap
||suddenly (adv.), suddenness (n.)