false

False is defined as untrue, misleading or artificial.

(adjective)

A fact that is untrue is an example of a fact that would be described as false.
A suitcase with a hidden compartment in the bottom is an example of a suitcase with a false bottom.
Dentures that you wear after your own teeth fall out are an example of false teeth.

See false in Webster's New World College Dictionary

not true; in error; incorrect; mistaken: a false argument
untruthful; lying; dishonest: a false witness
disloyal; unfaithful: a false friend
deceiving or meant to deceive; misleading: a false scent
not real; artificial; counterfeit: false teeth
not properly so named; deceptively resembling: false jasmine
based on wrong or mistaken ideas: false pride
Mech. temporary, nonessential, or added on for protection, disguise, etc.: a false drawer
Music pitched inaccurately

Origin: ME < OFr < fals < L falsus, pp. of fallere, to deceive: see fail

in a false manner

Related Forms:

See false in American Heritage Dictionary 4

adjective fals·er, fals·est

Contrary to fact or truth: false tales of bravery.
Deliberately untrue: delivered false testimony under oath.
Arising from mistaken ideas: false hopes of writing a successful novel.
Intentionally deceptive: a suitcase with a false bottom; false promises.
Not keeping faith; treacherous: a false friend. See Synonyms at faithless.
Not genuine or real: false teeth; false documents.
Erected temporarily, as for support during construction.
Resembling but not accurately or properly designated as such: a false thaw in January; the false dawn peculiar to the tropics.
Music Of incorrect pitch.
Unwise; imprudent: Don't make a false move or I'll shoot.
Computer Science Indicating one of two possible values taken by a variable in Boolean logic or a binary device.