SQUALID Meaning of SQUALID in English adj.1 filthy, repulsively dirty. 2 mean or poor in appearance. 3 wretched, sordid. Derivatives: squalidity n. squalidly adv. squalidness n. Etymology: L squalidus f. squalere be rough or dirty Oxford English vocab. Оксфордский английский словарь. 2012