I. “+ adjective
Etymology: Middle English untrewe, from Old English untrēowe, from un- (I) + trēowe true
1. : not true to an obligation, love, or trust : disloyal , unfaithful
is untrue to his highest opportunity and duty — Bruno Lasker
finally locates her lover, finds that he has been untrue and shoots him — W.E.Roberts
2. : not according with a standard of correctness : not level or exact
unsightly cracks, off-level floors, and untrue doors and windows — Building, Estimating & Contracting
3. : not according with the facts : false
the claim presented to the government contained an untrue statement — R.L.Taylor b. 1889
4. : not honest or fair : wrong
untrue methods
• un·true·ness noun
II. adverb
Etymology: Middle English untrewe, from untrewe, adjective
obsolete : untruly