Synonyms of pertinacious

1 Syllable

mule

2 Syllables

willful, grousing, stubborn, peevish, hellbent, waspy, tough-nut, dogged

3 Syllables

hardline, uncompliant, unyielding, fireball, persistent, unhearing, bulldogged, diligent, hardheaded, tenacious, unwearying, unpliable, untiring, self-willed

4 Syllables

intractable, unabated, doctrinaire, obstinate, unforgetful, unbendable, unrelaxed, persevering, attentive, determined

5 Syllables

importunate, indomitable, undefeatable

6 Syllables

indefatigable, opinionative, perseverative