adjective

not genuine; imitation or counterfeit.

she got on the plane with a fake passport

forgery,counterfeit,copy,sham,fraud,hoax,imitation,mock-up,dummy,reproduction,lookalike,likeness,phoney,pirate,knock-off,rip-off,dupe,forged,fraudulent,false,bogus,spurious,pseudo,worthless,invalid,dud,artificial,synthetic,simulated,replica,ersatz,plastic,man-made,mock,so-called,pretend,fakey

noun

a thing that is not genuine; a forgery or sham.

fakes of Old Masters

forgery,counterfeit,copy,sham,fraud,hoax,imitation,mock-up,dummy,reproduction,lookalike,likeness,phoney,pirate,knock-off,rip-off,dupe

verb

forge or counterfeit (something).

she faked her spouse’s signature

forge,counterfeit,falsify,sham,feign,mock up,copy,reproduce,replicate,doctor,alter,tamper with,tinker with,pirate,fiddle (with)