English Thesaurus
(verb) 
Definition
to cause something not genuine to appear real or more valuable by fraud
Did they fake this evidence?
Synonyms
forge
They forged dollar notes.
,
copy
She never participated in copying classified documents for anyone.
,
reproduce
The effect has proved hard to reproduce.
,
fabricate
All four claim that the evidence against them is fabricated.
,
counterfeit
He financed a plot to counterfeit gold coins.
,
falsify
The charges against him include fraud, bribery, and falsifying business records.
(verb) 
Definition
to pretend to have (an illness, emotion, etc.)
He faked nonchalance.
Synonyms
,
affect
He listened to them, affecting an amused interest.
,
assume
He assumed an air of superiority.
,
put on
,
pretend
He pretended to be asleep.
,
simulate
They rolled about, simulating a bloodthirsty fight.
,
feign
You can't feign interest in something you loathe.
,
go through the motions of
(noun) 
Definition
an object, person, or act that is not genuine
It is filled with famous works of art, and every one of them is a fake.
Synonyms
forgery
The letter was a forgery.
,
copy
Always keep a copy of everything in your own files.
,
fraud (informal)
He believes many psychics are frauds.
,
reproduction
a reproduction of a religious painting
,
dummy
The police video camera was a dummy.
,
imitation
the most accurate imitation of Chinese architecture in Europe
,
hoax
His claim to have a bomb was a hoax.
,
counterfeit
Counterfeits of the company's goods are flooding Europe.
(noun) 
Definition
an object, person, or act that is not genuine
She denied claims that she is a fake.
Synonyms
charlatan
This so-called psychic was exposed as a charlatan.
,
deceiver
He was condemned as a liar, cheat and deceiver.
,
sham
Their promises were exposed as a hollow sham.
,
quack
The man was a quack after all, just as Rosalinda had warned.
, ,
phoney or phony (informal)
(adjective) 
Definition
not genuine
The bank manager is said to have issued fake certificates.
Synonyms
artificial
The voice was affected, the accent artificial.
,
false
He paid for a false passport.
,
forged
She was carrying a forged American passport.
,
counterfeit
He admitted possessing and delivering counterfeit currency.
,
affected
She passed by with an affected air and a disdainful look.
,
assumed
The articles were published under an assumed name.
,
put-on
,
pretend (informal)
,
mock
`It's tragic,' he swooned in mock horror.
,
imitation
a set of novels bound in imitation leather
,
sham
The election has been denounced as a sham by world leaders.
,
pseudo (informal)
,
feigned
He answered me with feigned indifference.
, ,
phoney or phony (informal)
Opposites
, , , , , , , , , ,
dinkum (Australian, New Zealand, informal)

Additional synonyms

in the sense of affect
Definition
to put on a show of
He listened to them, affecting an amused interest.
in the sense of affected
Definition
pretended
She passed by with an affected air and a disdainful look.
Synonyms
put-on,
camp (informal),
la-di-da (informal),
arty-farty (informal),
phoney or phony (informal)
in the sense of assume
Definition
to make a pretence of
He assumed an air of superiority.

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Video: pronunciation of 'fake'

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Thesaurus for fake from the Collins English Thesaurus
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