Lither \Li"ther\, a. [AS. ? bad, wicked.] Bad; wicked; false; worthless; slothful. [Obs.] --Chaucer. Not lither in business, fervent in spirit. --Bp. Woolton. Note: Professor Skeat thinks `` the lither sky'' as found in Shakespeare's Henry VI. ((Part I. IY. YII., 21) means the stagnant or pestilential sky. -- {Li"ther*ly}, adv. [Obs.]. -- {Li"ther*ness}, n. [Obs.]