Etymology
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look-alike (n.)

"someone who closely resembles another," 1937, American English, from look (v.) + alike.

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Definitions of look-alike
1
look-alike (n.)
someone who closely resembles a famous person (especially an actor);
Synonyms: double / image
2
look-alike (adj.)
resembling closely;
they have look-alike cars
From wordnet.princeton.edu

Dictionary entries near look-alike

looey

loof

loofah

loogie

look

look-alike

lookdown

looker

looking

lookit

lookout