un certainly (adverb) irregularly: intermittently
Sinonime: any which way, anyhow, at intervals, by fits and starts, by turns, disconnectedly, eccentrically, erratically, fitfully,
haphazardly, helter-skelter, in snatches, infrequently, jerkily, now and again,
occasionally, off and on, out of sequence, periodically, slapdash, spasmodically, sporadically, uncertainly, uncommonly, unevenly, unmethodically, unpunctually, willy-nilly
Antonime: evenly,
regularly