(1):

(n.) Want of truth or accuracy; an untrue assertion or representation; error; misrepresentation; falsity.

(2):

(n.) A deliberate intentional assertion of what is known to be untrue; a departure from moral integrity; a lie.

(3):

(n.) Treachery; deceit; perfidy; unfaithfulness.

(4):

(n.) A counterfeit; a false appearance; an imposture.