duplicate

1 something or someone that strongly resembles another doll carriages that are duplicates of baby carriages Synonyms alter ego, carbon, carbon copy, clone, counterpart, doppelgänger (or doppelganger), double, image, duplication, facsimile, fetch, likeness, look-alike, match, mirror image, picture, replica, ringer, spit, spitting image, twinRelated Words Chinese copy; effigy, portrait, portrayal; companion, fellow, mate; equal, equivalent; analogue (or analog), parallelNear Antonyms antithesis, converse, opposite, reverse

2 something that is made to look exactly like something else a duplicate of a house key Synonyms carbon, carbon copy, clone, dummy, dupe, copy, duplication, facsimile, imitation, mock, reduplication, replica, replication, reproductionRelated Words counterfeit, fake, forgery, knockoff, phony (also phoney), rip-off, rubber stamp, sham; miniature, mock-up, simulation; reconstruction, re-creation; image, likeness, semblance, shadow; impression, imprint, print; approximation, reincarnation, version; extra, reserve, spareAntonyms archetype, original, prototype

1 to make an exact likeness of art students trying to duplicate paintings in the museum's collection as part of their training Synonyms clone, copycat, copy, imitate, reduplicate, render, replicate, reproduceRelated Words counterfeit, fake, forge, knock off, rip off; mimic, simulate; reconstruct, re-createNear Antonyms create, imagine, initiate, inventAntonyms originate

2 to make or do again we were unable to duplicate the experiment in our own lab, so we're suspicious Synonyms repeat, redo, reduplicate, reiterate, remake, renew, replicate, repriseRelated Words recreate, reenact, reinvent

3 to make twice as great or as many the recipe can be easily duplicated in order to feed a large family Synonyms double, redoubleRelated Words compound, multiply; accumulate, balloon, build (up), burgeon (also bourgeon), enlarge, escalate, expand, increase, mount, mushroom, proliferate, rise, snowball, swell, wax