INEFFECT'IVE, adjective [in and effective.] Not effective; not producing any effect, or the effect intended; inefficient; useless. The word of God, without the spirit, is a dead and ineffective letter. 1. Not able; not competent to the service intended; as ineffective troops; ineffective force. 2. Producing no effect.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI