Synonyms of tenacious in English:

tenacious


See definition of tenacious

adjective

1‘he paused for a moment, but without releasing his tenacious grip’

SYNONYMS
firm, tight, fast, clinging
strong, forceful, powerful, unshakeable, immovable, iron
ANTONYMS

loose, weak

2‘he had a reputation for being a tenacious man’

SYNONYMS
persevering, persistent, pertinacious, determined, dogged, single-minded, strong-willed, tireless, indefatigable, resolute, patient, purposeful, diligent, assiduous, sedulous, unflagging, staunch, steadfast, untiring, unwavering, unswerving, unshakeable, unyielding, uncompromising, insistent, importunate, relentless, unrelenting, inexorable, implacable
stubborn, intransigent, obstinate, obdurate, stiff-necked
North American rock-ribbed
ANTONYMS

irresolute

3‘he had a tenacious memory’

SYNONYMS
retentive, good
photographic

4‘she struggled to free herself from the tenacious mud’

SYNONYMS
sticky, adhesive, clinging, gluey, gummy, glutinous, viscid, viscous, mucilaginous
British claggy
Scottish, Northern English clarty