How many letters does the top answer for “having or marked by confidence or assurance” have?

The most common answer is confident (9 letters).

Crossword clue: having or marked by confidence or assurance

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

confident 9 letters wn-def

having or marked by confidence or assurance

marked by assurance; exhibiting confidence 60% similar → assured