Synonyms of offhand

1 Syllable

glib, gruff, blasé, cool, curt

2 Syllables

offish, blase, curter, improv, laid-back, discinct, aloof, chanced, adlib, folksy, impish, gruffer, chancing, pixieish, mellow, breezy, bandaid, flippant, lippy, ruder, casual, rudest, gruffest, chancer, brusque, band-aid, half-assed, ad-hoc

3 Syllables

spontaneous, unbidden, discourteous, haphazard, informal, negligent, nonchalant, unguarded, hot-and-cold, unprompted, cavalier, cursory, impromptu, hang-loose, outgiving, unscripted, easygoing, relaxed, effortless, judgmental, careless, off-the-cuff

4 Syllables

improviso, unprepared, perfunctory, unexcited, disentranced, unconcerned, uncritical, arbitrary, improvised, impulsive, quick-and-dirty, jury-rigged, uncircumspect

5 Syllables

spur-of-the-moment, uninterested, extemporaneous, unimpressible, unceremonious, unmeditated, unpremediated, disimpassioned, pococurante, autoschediastic

6 Syllables

unpremeditated, undemonstrative, improvisatory