2 entries under this word

Underhand

Un'der-hānd, adv.

adverb

adv. 1. By secret means; in a clandestine manner.

Baillie Macwheeble provided Janet, underhand, with meal for their maintenance. W. Scott.

Sense 2. By fraud; by fraudulent means. “Such mean revenge committed underhand.” Dryden.

adjective

a. Secret; clandestine;—usually implying meanness or fraud, or both. “Underhand detractors.” Addison.