counterfeit

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To make a copy of, usually with the intent to defraud; forge: counterfeits money.
2. v. To make a pretense of; feign: counterfeited interest in the story.
3. v. To carry on a deception; dissemble.
4. v. To make fraudulent copies of something valuable.
5. adj. Made in imitation of what is genuine with the intent to defraud: a counterfeit dollar bill.
6. adj. Simulated; feigned: a counterfeit illness.
7. n. A fraudulent imitation or facsimile.

Century Dictionary and Cyclopedia

1. Made in semblance or imitation of an original; imitated; copied; factitious.
2. Specifically, made in imitation of an original, with a view to defraud by passing the false copy as genuine or original; forged; spurious: as, counterfeit coin; a counterfeit bond or deed; a counterfeit bill of exchange.
3. Feigned; simulated; false; hypocritical: as, a counterfeit friend.
4. Counterfeiting; dissembling; cheating.
5. Deformed; unnatural.
6. n. An imitation; a copy; something made in imitation of or strongly resembling another; rarely, a likeness; a portrait; an image.
7. n. Specifically, an imitation or copy designed to pass as an original. In law: A spurious imitation of a thing which has legal value, and fashioned or intended to be used in deceit by passing it as genuine, as a coin made of base metal in the likeness of a gold coin.
8. n. One who feigns or simulates; a counterfeiter; an impostor.
9. To make a semblance of; make or be a copy of; copy; imitate; resemble; be like.
10. Specifically, to make a copy of without authority or right, and with a view to deceive or defraud by passing the copy as original or genuine; forge: as, to counterfeit coin, bank-notes, a seal, a bond, a deed or other instrument in writing, the handwriting or signature of another, etc.
11. To feign; make a pretense of; simulate; pretend; put on a semblance of: as, to counterfeit piety.
12. To make in imitation, or as a counterpart of something else.
13. To feign or pretend to be (what one is not).
14. Synonyms Mimic, Ape, etc. (see imitate), forge, simulate, sham, feign.
15. To feign; dissemble; carry on a fiction or deception.

Wiktionary

1. adj. False, especially of money; intended to deceive or carry appearance of being genuine.
2. adj. Inauthentic
3. n. A non-genuine article; a fake.
4. n. One who counterfeits; a counterfeiter.
5. v. transitive To falsely produce what appears to be official or valid; to produce a forged copy of.
6. v. transitive, obsolete To produce a faithful copy of.
7. v. transitive, obsolete To feign.
8. v. transitive, poker Of a turn or river card, to invalidate a player's hand by making a better hand on the board.

GNU Webster's 1913

1. adj. Representing by imitation or likeness; having a resemblance to something else; portrayed.
2. adj. Fabricated in imitation of something else, with a view to defraud by passing the false copy for genuine or original.
3. adj. Assuming the appearance of something; false; spurious; deceitful; hypocritical.
4. n. That which resembles or is like another thing; a likeness; a portrait; a counterpart.
5. n. That which is made in imitation of something, with a view to deceive by passing the false for the true.
6. n. One who pretends to be what he is not; one who personates another; an impostor; a cheat.
7. v. To imitate, or put on a semblance of; to mimic.
8. v. To imitate with a view to deceiving, by passing the copy for that which is original or genuine; to forge
9. v. To carry on a deception; to dissemble; to feign; to pretend.
10. v. To make counterfeits.

WordNet 3.0

1. adj. not genuine; imitating something superior
2. v. make a copy of with the intent to deceive
3. n. a copy that is represented as the original