instantly

Synonyms

bang, directly, forthwith, headlong, immediately, instantaneously, instanter, now, PDQ, plumb, presently, promptly, pronto, right, right away, right now, right off, straight off, straightaway, straightway;

Near Antonyms

slowly;

late, tardily;

Related Words

away, freely;

anon, momentarily, shortly, soon;

apace, briskly, fast, fleetly, full-tilt, posthaste, quick, quickly, rapidly, readily, snappily, speedily, swift, swiftly;

abruptly, presto, suddenly, unexpectedly;

hastily, impetuously, impulsively, rashly, recklessly;

exactly, opportunely, punctually, seasonably;

Phrases

at once, in no time, off the bat, on a dime, on the double, on the spot;

Synonyms

as soon as, once, when;

Near Antonyms

after, since;