to pretend to be (asleep etc); to disguise oneself as; pretense; disguise; (military) to camouflage; camouflage

to forge; to fake; to counterfeit

false; hypocritical; artificial; sham

hypocrite

perjury

hypocritical

forged book; book of dubious authenticity; misattributed book; Apocrypha

puppet army

inferior; false

(ACG) femboy

counterfeit currency

faking a modern object as an ancient one

illegitimate dynasty; pretender dynasty

forged scriptures; bogus classic; pseudepigrapha; apocrypha

(medicine, signal processing) artifact; spurious signal or feature

counterfeit currency

false roof

to prettify; to dress (sth) up

(technology) deepfake

true or bogus; authenticity

to disprove; to confirm (sth) to be false

to prevent counterfeiting; anti-counterfeiting

false proposition; fundamentally flawed notion; (in popular usage, can also refer to anything based on a flawed notion, such as a false dichotomy or a question that starts with a false premise)

pseudocode

hypocrite

pseudoscience

counterfeit object; forgery; fake

forger

false positive

false negative

Uncyclopedia (satirical website parodying Wikipedia)

mockumentary

cheap quality counterfeit (goods); low-quality commodities

can't judge true or false (idiom); unable to distinguish the genuine from the fake; not to know whether to believe (what one reads in the news)

false but apparently real