un·truth 
/ˌʌnˈtru:θ/ noun
plural un·truths /ˌʌnˈtru:θ/ noun formal 1 [count] : a statement that is not true : lie
▪ a blatant untruth ▪ the untruths he has uttered 2 [noncount] : the state of being false or a lie
▪ The untruth [=falseness] of that statement is apparent.
▪ a blatant untruth ▪ the untruths he has uttered
▪ The untruth [=falseness] of that statement is apparent.
