How many letters does the top answer for “having little desire for success or achievement” have?

The most common answer is ambitionless (12 letters).

Crossword clue: having little desire for success or achievement

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

ambitionless 12 letters wn-def

having little desire for success or achievement

unambitious 11 letters wn-def

having little desire for success or achievement

having a strong desire for success or achievement 67% similar → ambitious