affirmative adj1 : asserting the existence of certain facts esp. in support of a cause of action [ proof]
2 : resulting from an intentional act [ concealment]
3 : involving or requiring application of effort [an duty]
4 : favoring or supporting a proposition or motion [an vote]
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.