"untruest" in the adjective sense
1. untrue
not according with the facts
"unfortunately the statement was simply untrue"
2. untrue
not true to an obligation or trust
"is untrue to his highest opportunity and duty"-Bruno Laske
3. out of true, untrue
not accurately fitted not level
"the frame was out of true"
"off-level floors and untrue doors and windows"
4. false, untrue
used especially of persons) not dependable in devotion or affection unfaithful
"a false friend"
"when lovers prove untrue"
Source: WordNet® (An amazing lexical database of English)
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