SLUGGISH Meaning of SLUGGISH in English adj. inert; inactive; slow-moving; torpid; indolent (a sluggish circulation; a sluggish stream). sluggishly adv. sluggishness n.[ ME f. SLUG(1) or slug (v.): see SLUGGARD ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012