How many letters does the top answer for “for a short time” have?

The most common answer is awhile (6 letters).

Crossword clue: for a short time

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

awhile 6 letters wn-def

for a short time

briefly 7 letters wn-def

for a short time

shortly 7 letters wn-def

for a short time

for a very short time 67% similar → transiently

for a while; for some time; for a short time. 50% similar → awhile

from that time on 50% similar → thenceforth, thereafter

intensely fashionable for a short time 50% similar → faddish, faddy

lasting a very short time 50% similar → ephemeral, fugacious, passing

many times at short intervals 50% similar → frequently, oft, often

sleeping for a short period of time 50% similar → catnap, snooze