D defs.my
Entry 2 senses Webster, 1913

Disingenuous

/dĭs-ĭn-jĕn'-yo͞o-əs/ · Dis·in·gen·u·ous · IPA /ˌdɪs.ɪnˈd͡ʒɛn.ju.əs/
01 a. Not noble; unbecoming true honor or dignity; mean; unworthy; as, disingenuous conduct or schemes.
  1. 1.
    Not noble; unbecoming true honor or dignity; mean; unworthy; as, disingenuous conduct or schemes.
  2. 2.
    Not ingenuous; wanting in noble candor or frankness; not frank or open; uncandid; unworthily or meanly artful.
    “So disingenuous as not to confess them [faults].” Pope.