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

The most common answer is grin (4 letters).

Crossword clue: another word for smile

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

grin 4 letters gen-syn

to draw back the lips and reveal the teeth, in a smile, grimace, or snarl

grinning 8 letters gen-syn

a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

smiling 7 letters gen-syn

a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

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