How many letters does the top answer for “in a clearly noticeable manner” have?

The most common answer is markedly (8 letters).

Crossword clue: in a clearly noticeable manner

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

markedly 8 letters wn-def

in a clearly noticeable manner

in a noticeable manner 67% similar → noticeably, observably, perceptibly

in a luculent manner; clearly. 50% similar → luculently

in a plain manner; clearly. 50% similar → plainly