Englishoccasionally
adverb
he met her occasionally for coffee:
sometimes, from time to time, (every) now and then, (every) now and again, at times, every so often, (every) once in a while, on occasion, on occasions, on the odd occasion, periodically, at intervals, irregularly, sporadically, spasmodically, infrequently, intermittently, on and off, off and on;
archaic ever and anon.
▷antonyms often, frequently.