occasional

1 lacking in steadiness or regularity of occurrence the weekend forecast is for occasional showers Synonyms aperiodic, casual, catchy, choppy, discontinuous, episodic (also episodical), erratic, intermittent, irregular, fitful, spasmodic, spastic, sporadic, spotty, unsteadyRelated Words convulsive, sudden, violent; broken, disconnected, fragmentary, interrupted; aimless, arbitrary, desultory, haphazard, hit-and-miss, hit-or-miss, odd, random, scattered, slapdash, stray; capricious, changeful, changing, flickery, fluctuating, fluid, inconstant, mercurial, mutable, temperamental, uncertain, unpredictable, unsettled, unstable, varying, wavering; changeable, fickle, variable, volatileNear Antonyms changeless, equable, even, stable, stationary, uniform; unchanging, unvarying, unwavering; methodical (also methodic), orderly, systematic; unrelenting, unremittingAntonyms constant, continuous, habitual, periodic, regular, repeated, steady

2 not often occurring or repeated an occasional mechanical problem with our car, but nothing serious Synonyms isolated, infrequent, odd, rare, sporadicRelated Words scarce, scattered, uncommon, unique, unusual; choppy, discontinuous, erratic, fitful, intermittent, irregular, spasmodic, spotty, unsteadyNear Antonyms daily, regular; common, ordinary, routineAntonyms frequent