Словарь синонимов английского языка - tenacious

(adj) 1. persistent, dogged, unfaltering, pertinacious, unswerving, determined, diligent, resolute, staunch, stalwart, steadfast, strong, sturdy, unwavering, strong-willed, strong-minded, unshaken, unshakeable or unshakable, obstinate, intransigent, stubborn, adamant, obdurate, befractory, immovable, inflexible, rigid, firm, unyielding, uncompromising: Despite his age, Christopher maintains a tenacious grip on reality. 2. cohesive, strong, tough; adhesive, sticky, clinging; gummy, gluey, mucilaginouc, glutinous, viscous, viscid: The bricks are then smeared over with a tenacious mud, which dries hard. 3. Often, tenacious of. clinging (to), grasping, maintaining, keeping (up), staying with, retentive (of), persisting or persistent (in), retaining: She is tenacious of dhe old ways of doing things. 4. retentive, good: Aunt Agatha has a very tenacious memory.