Synonyms to fleetingly

briefly, accurately, aphoristically, bluntly, brusquely, compendiously, concisely, crisply, curtly, economically, exactly, flickeringly, flittingly, for a moment, hastily, hurriedly, in a capsule, in a nutshell, in an instant, in brief, in brief compass, in short, laconically, momentarily, pithily, pointedly, precisely, quickly, sententiously, shortly, sparely, succinctly, summarily, swiftly, synoptically, tersely, transiently, immediately, instantaneously, instanter, instantly, just now, just then, momentaneously, momently, on the dot, on the instant, on the nail, on the spot, PDQ, agilely, amain, animatedly, anxiously, apace, at flank speed, at once, at the double, avidly, breathlessly, by forced marches, cursorily, decisively, directly, double-quick, eagerly, enthusiastically, expeditiously, fast, feverishly, flat-out, forthwith, furiously, hand over fist, hand over hand, headlong, h