SLUG'GISH, adjective 1. Habitually idle and lazy; slothful; dull; inactive; as a sluggish man. 2.Slow; having little motion; as a sluggish river or stream. 3. Inert; inactive; having no power to move itself. Matter is sluggish and inactive.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI