Adjective: Not true; incorrect; deliberately misleading or deceptive. 'False' implies a deviation from reality or truth, whether unintentional or intentional. It can describe statements, actions, or even appearances. A 'false' statement is one that doesn't align with facts. A 'false' friend might betray trust. A 'false' alarm unnecessarily triggers concern. The degree of culpability associated with 'false' varies; it can range from simple error to malicious intent.
In logic, 'false' is one of the two possible truth values of a proposition, the other being 'true'. Furthermore, 'false' can extend to the physical realm, describing something artificial or counterfeit.
SPE
SHAM IDOL MOCK SOUR FAKE FAUX WAND
BOGUS NOTSO ALARM START PUTON WRONG
UNTRUE PSEUDO OFFKEY
UNLOYAL ASSUMED FICTIVE
SPURIOUS ILLUSORY SPECIOUS MISTAKEN DELUSIVE DISLOYAL
ERRONEOUS INSINCERE THATSALIE INCORRECT PRETENSES PRETENDED IMITATION SIMULATED DECEITFUL
UNTRUTHFUL MISLEADING FICTITIOUS ARTIFICIAL APOCRYPHAL UNFAITHFUL
FAITHLESSLY TREASONABLY TREACHEROUS
THATSNOTTRUE TRAITOROUSLY
TREACHEROUSLY