How many letters does the top answer for “having an acute sound; (gr. gram.), having an acute accent on the last syllable.” have?

The most common answer is oxytone (7 letters).

Crossword clue: having an acute sound; (gr. gram.), having an acute accent on the last syllable.

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

oxytone 7 letters web-def

word having stress or an acute accent on the last syllable