frequent, infrequent, intermittent, periodic, sporadic, nary, incessant, copious, continual, minor, odd, inadvertent, obligatory, momentary, nightly, endless, interminable, briefest, impromptu, incidental, gratuitous, inveterate, unanimated, desultory, innocuous, constant, unending, fleeting, errant, assorted, perfunctory, persistent, spasmodic, uncommon, ceaseless, minimal, companionable, quotidian, overenthusiastic, unabashed, occupational hazard, oddball, unvarying, annoying, sibilant, regular, merest, brusk, unceasing, sly, unintentional, semiweekly, audible, amusing, slight, chucklesome, artful, aural, innumerable, imaginary, chatty, bothersome, ostensible, mundane, bloviation, onanistic, irksome, noisome, snide, noticeable, somnambulistic, unwelcome, uncharacteristic, unremitting, continuous, jokey, sidelong, splintery, banal, peevish, schleps, some, roving, droll, uncredited, overfamiliar, ersatz, overt, recriminating, scritch, nocturnal, eensy, typical, gelid, humdrum, absentminded, wheezy, subtle, unmodulated, subsequent, inexplicable, scattershot, quent, publicized, brief, briefer, few, fortnightly, rare, complimentary, earliest, eulogistic, laudatory, libelous, numerous, publicised, reprinted, scurrilous, unattributed

condone, pied-a-terre

casual, episodic, infrequent, irregular, unpredictable