undutiful adjective.
[ʌn'dju:tɪfʊl, -f(ǝ)l] L16.[from UN-1 + DUTIFUL.]Not dutiful, contrary to or lacking dutifulness.
■ unduteous adjective (
arch.) undutiful
L16. ■ undutifully adverb L16. ■ undutifulness noun M16. [TahlilGaran] English Dictionary ▲