How many letters does the top answer for “with a lack of courage and determination” have?

The most common answer is pusillanimously (15 letters).

Crossword clue: with a lack of courage and determination

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

pusillanimously 15 letters wn-def

with a lack of courage and determination

simperingly 11 letters wn-def

with a lack of courage and determination

lack of courage; cowardliness. 50% similar → discourage