All gradual antonyms
grad·u·al
G g adjective gradual
- rapid — occurring within a short time; happening speedily: rapid growth.
adj gradual
- discontinuous — not continuous; broken; interrupted; intermittent: a discontinuous chain of mountains; a discontinuous argument.
- intermittent — stopping or ceasing for a time; alternately ceasing and beginning again: an intermittent pain.
- infrequent — happening or occurring at long intervals or rarely: infrequent visits.
- sudden — happening, coming, made, or done quickly, without warning, or unexpectedly: a sudden attack.
- uneven — not level or flat; rough; rugged: The wheels bumped and jolted over the uneven surface.
- irregular — without symmetry, even shape, formal arrangement, etc.: an irregular pattern.
- abrupt — An abrupt change or action is very sudden, often in a way which is unpleasant.