How many letters does the top answer for “(roman mythology) god of the sea; counterpart of greek poseidon” have?

The most common answer is neptune (7 letters).

Crossword clue: (roman mythology) god of the sea; counterpart of greek poseidon

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

neptune 7 letters wn-def

(Roman mythology) god of the sea; counterpart of Greek Poseidon