How many letters does the top answer for “in a manful manner; with qualities thought to befit a man” have?

The most common answer is manfully (8 letters).

Crossword clue: in a manful manner; with qualities thought to befit a man

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

manfully 8 letters wn-def

in a manful manner; with qualities thought to befit a man

manly 5 letters wn-def

possessing qualities befitting a man

without qualities thought to befit a man 57% similar → unmanly