How many letters does the top answer for “turn red, as if in embarrassment or shame” have?

The most common answer is blush (5 letters).

Crossword clue: turn red, as if in embarrassment or shame

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

blush 5 letters wn-def

turn red, as if in embarrassment or shame

crimson 7 letters wn-def

a deep and vivid red color

flush 5 letters wn-def

turn red, as if in embarrassment or shame

redden 6 letters wn-def

turn red, as if in embarrassment or shame