Disingenuous

Part of speech: adjective (a.)

1. Not noble; unbecoming true honor or dignity; mean; unworthy; as, disingenuous conduct or schemes.

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. -- Dis`in*gen"u*ous*ly, adv. T. Warton. -- Dis`in*gen"u*ous*ness, n. Macaulay.