Synonyms of promptly

1 Syllable
soon, sharp, fast, pdq, now
2 Syllables
straightly, flat-out, briskly, swiftly, soonest, quickly, sooner, pronto, fleetly
3 Syllables
readily, eagerly, matinal, speedily, snappily, brusquely, directly, hungrily, thirstily, cravingly, rapidly, longingly, ardently, breathlessly, punctually, posthaste, straightaway, instantly, hastily, zestfully
4 Syllables
facilely, summarily, impatiently, spiritedly, lickety-split, contiguously, expectantly
5 Syllables
immediately, arbitrarily, peremptorily, expeditiously
6 Syllables
unhesitatingly, precipitately, enthusiastically
7 Syllables
anticipatorily, unpremeditatedly