false
adj.
not in accordance with the fact or reality or actuality
gave false testimony under oath|false tales of bravery
adv.
in a disloyal and faithless manner
he behaved treacherously|his wife played him false
adj.
arising from error
a false assumption|a mistaken view of the situation
Synonym: mistaken
adj.
erroneous and usually accidental
a false start|a false alarm
adj.
deliberately deceptive
false pretenses
adj.
inappropriate to reality or facts
delusive faith in a wonder drug|delusive expectations|false hopes
Synonym: delusive
adj.
not genuine or real; being an imitation of the genuine article
it isn't fake anything; it's real synthetic fur|faux pearls|false teeth|decorated with imitation palm leaves|a purse of simulated alligator hide
adj.
designed to deceive
a suitcase with a false bottom
adj.
inaccurate in pitch
a false (or sour) note|her singing was off key
Synonym: sour, off-key
adj.
adopted in order to deceive
an assumed name|an assumed cheerfulness|a fictitious address|fictive sympathy|a pretended interest|a put-on childish voice|sham modesty
adj.
(used especially of persons) not dependable in devotion or affection; unfaithful
a false friend|when lovers prove untrue
Synonym: untrue
Antonym: true