incredulous, quizzical, sheepish, praiseful, curt, dismissive, unbidden, sotto voce, offhand, ex tempore, bemused, uncomplimentary, laudatory, impassioned, unrehearsed, jest, schoolboyish, succinct, terse, ungracious, forthright, nonplussed, candid, verbalised, unguarded, unembarrassed, dumbfounded, sarcastic, effusive, thunderstruck, churchillian, congratulatory, unhesitating, dumbstruck, impolite, needled, schoolmasterly, equivocal, speechless, standing ovation, apologetic, disobliging, unamused, impromptu, evasive, bon mot, unasked, unattributed, verbatim, impertinent, flippant, perfunctory, extemporaneous, hypothetical, inaudible, cursory, frank, blunt, scathing, extempore, breathless, amusing, startling, damning, snide, dittoed, shamefaced, brusque, eulogistic, unquotable, refreshing, emphatic, facetious, audible, unchivalrous, longwinded, platitudinous, slow handclap, uncomfortable, non sequitur, astonished, indignant, rhetorical, billet doux, unattributable, jocular, bluntest, unilluminating, hushed, offhanded, scornful, disingenuous, innocuous, unforthcoming, anonymous, jesuitical, deprecatory, placatory, inadvertent, condescending, bristled, scurrilous, indiscreet, instinctive, undirected, conscious, disrespectful, irrelevant, prejudicial, subconscious, unaided, creative, effortful, illogical, imitative, overt, unconsidered, uninhibited, unselfish, volitional

impulsive, self-generated, spontaneous