- untiring
- I(New American Roget's College Thesaurus)adj. tireless, indefatigable, unwearied, unremitting, unrelaxing. See resolution.II(Roget's IV) modif.Syn. inexhaustible, indefatigable, powerful, unremitting, persevering, strong, unintermitted, continuing, resolute, continued, renewed, unflagging, resistless, firm, unstinted, constant, tenacious, unwearying, durable, unwearied, sedulous, steady, determined, resolute, persistent, patient, dogged, plodding, pertinacious, undeterred, unflinching, unfaltering, unwavering, unswerving, unresting, indomitable, unceasing, staunch, unfailing.Ant. weak*, spasmodic, intermittent.III(Roget's Thesaurus II) adjective Having or showing a capacity for protracted effort, regardless of difficulty or frustration: indefatigable, inexhaustible, tireless, unfailing, unflagging, unwearied, weariless. See CONTINUE, TIRED.
English dictionary for students. 2013.