How many letters does the top answer for “another word for leech” have?

The most common answer is bloodsucker (11 letters).

Crossword clue: another word for leech

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

bloodsucker 11 letters gen-syn

carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end

phlebotomise 12 letters gen-syn

draw blood

another word for about 50% similar → approximately, roughly, some

another word for terms 50% similar → footing

another word for under 50% similar → nether

another word for word 50% similar → phrase