Based on false or misleading information or unjustified assumptions.
Of a totally fictitious issue printed for collectors, often issued on behalf of a non-existent territory or country (not to be confused with forgery, which is an illegitimate copy of a genuine stamp).
Undesirable or harmful.
Counterfeit or fake; not genuine.
Incorrect, useless, or broken.
A liquor made of rum and molasses.
Based on factually incorrect premises.
Not essential or permanent, as parts of a structure which are temporary or supplemental.
Out of tune.
Used in the vernacular name of a species (or group of species) together with the name of another species to which it is similar in appearance.
Untrue, not factual, factually incorrect.
Uttering falsehood; dishonest or deceitful.
Not well founded; not firm or trustworthy; erroneous.
Spurious, artificial.
Not faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous.
One of two options on a true-or-false test.
To incorrectly decode noise as if it were a valid signal.
In a dishonest and disloyal way; falsely.