How many letters does the top answer for “make pale or sickly” have?

The most common answer is etiolate (8 letters).

Crossword clue: make pale or sickly

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

etiolate 8 letters wn-def

make pale or sickly

become pale and sickly 50% similar → wan