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

The most common answer is dam (3 letters).

Crossword clue: another word for dyke

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

dam 3 letters gen-syn

a barrier constructed to contain the flow of water or to keep out the sea

dike 4 letters gen-syn

a barrier constructed to contain the flow of water or to keep out the sea

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