How many letters does the top answer for “in a questionably unusual manner” have?

The most common answer is fishily (7 letters).

Crossword clue: in a questionably unusual manner

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

fishily 7 letters wn-def

in a questionably unusual manner

queerly 7 letters wn-def

in a questionably unusual manner

in an unusual manner 67% similar → unwontedly