EFFECT'IVE, adjective Having the power to cause or produce; efficacious. They are not effective of any thing. 1. Operative; active; having the quality of producing effects. Time is not effective nor are bodies destroyed by it. 2. Efficient; causing to be; as an effective cause. 3. Having the power of active operation; able; as effective men in any army; an effective force.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI