<p><strong>Adjective</strong></p><ul><li>made in imitation so as to be passed off fraudulently or deceptively as genuine; not genuine; forged: counterfeit dollar bills.</li><li>Synonyms: bogus, spurious, pretended, unreal: counterfeit grief.</li><li>Synonyms: ersatz, fake, mock, make-believe, pretend, feigned, sham.</li></ul><p><strong>Noun</strong></p><ul><li>an imitation intended to be passed off fraudulently or deceptively as genuine; forgery.</li><li>Synonyms: falsification, sham.</li><li>Archaic: a copy.</li><li>Archaic: a close likeness; portrait.</li><li>Obsolete: impostor; pretender.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>to make a counterfeit of; imitate fraudulently; forge.</li><li>Synonyms: falsify, copy.</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>to make counterfeits, as of money.</li><li>to feign; dissemble.</li></ul>