WordReference Random House Unabridged Dictionary of American English © 2026
ir•rig•u•ous
(i rig′yo̅o̅ əs),USA pronunciation adj. [Archaic.]
- well-watered, as land.
- Latin irriguus, equivalent. to irrig(āre) to wet (see irrigate) + -uus deverbal adjective, adjectival suffix
- 1645–55