DISINGENUOUS, adjective [dis and ingenuous.] 1. Unfair; not open, frank and candid; meanly artful; illiberal; applied to persons. 2. Unfair; meanly artful; unbecoming true honor and dignity; as disingenuous conduct; disingenuous schemes.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI