UNHEALTHFUL, adjective unhelth'ful. 1. Not healthful; injurious to health; insalubrious; unwholesome; noxious; as an unhealthful climate or air. 2. Abounding with sickness or disease; sickly; as an unhealthful season.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI