offhanded, flippant, snide, glib, sarcastic, remark, tactless, non sequitur, amusing, derisive, impertinent, jocular, wry, unquotable, apropos, inelegant, impolitic, condescending, throwaway, quip, terseness, unembarrassed, blithe, barbed, snarky, curt, casually, anecdote, unforthcoming, pithy, incredulous, insouciant, jokey, obtuse, archly, banal, nonchalant, inane, indiscrete, asker, misspeak, prepositional, dismissive, mishear, asinine, waspish, circumlocution, forgivingly, absurd, infelicitous, droll, waggish, quippy, unuttered, condescension, tautologies, declarative sentence, winkingly, cryptic, artless, brusk, brusque, disdainful, schoolmarmish, deprecating, unpoetic, fatuous, jesting, sardonic, perfunctory, sly, assumptive, innocuous, pejorative, inarticulateness, trite, split infinitive, praiseful, awkward, graceless, zinger, undignified, sarcasms, mumble, overhear, deprecatory, parenthetical, preposterous, indiscreet, passingly, sheepishness, facetious, unrevealing, laconic, overfamiliar, witty, elicits, inelegance, interrogative, disobliging, prudishly, unoffensive, operate, anyone, approximate, distinguishing, hard, sell, sir, anything, briefly, earnest, gratis, madam, none, pleasing, queer, read, sane, serve, simple, tell, backwards, briefest, commonsensical, crude, decent, dimmest, empiricist, exactest, fact, flimsiest, gricean, haphazard, humean, irrefragable, levelheaded, niggling, nonempirical, nothing, odd, oddest

casual

ad-lib, careless, extemporaneous, extemporary, extempore, off-the-cuff, offhanded, offhandedly, unprepared, unrehearsed