Lethargic \Le*thar"gic\ (l[-e]*th[aum]r"j[i^]k), Lethargical \Le*thar"gic*al\ (-j[i^]*kal), a. [L. lethargicus, Gr. lhqargiko`s: cf. F. l['e]thargique. See {Lethargy}.] Pertaining to, affected with, or resembling, lethargy; morbidly drowsy; dull; heavy. -- {Le*thar"gic*al*ly}, adv. -- {Le*thar"gic*al*ness}, n. -- {Le*thar"gic*ness}, n.