persevering (adj.)

• accepting
• assiduous
• balking
• balky
• bigoted
• bound
• bullheaded
• case-hardened
• committed
• constant
• continuing
• decided
• decisive
• dedicated
• definite
• determined
• devoted
• diligent
• disciplined
• dogged
• dogmatic
• earnest
• enduring
• faithful
• fanatic
• forbearing
• hardheaded
• headstrong
• immutable
• inalterable
• indefatigable
• indomitable
• indulgent
• industrious
• insistent
• intolerant
• invincible
• lasting
• lenient
• long-suffering
• longanimous
• loyal
• mulish
• obstinate
• opinionated
• overzealous
• patient
• permanent
• persistent
• persisting
• pertinacious
• philosophical
• pigheaded
• plodding
• preoccupied
• purposeful
• rapt
• relentless
• resolute
• resolved
• restive
• sedulous
• self-willed
• serious
• set
• sincere
• single-minded
• sleepless
• stable
• steadfast
• steady
• stiff-necked
• stoic
• strong-willed
• stubborn
• sulky
• sullen
• tenacious
• tireless
• tolerant
• unconquerable
• uncooperative
• undaunted
• understanding
• undiscouraged
• unfailing
• unfaltering
• unflagging
• unflinching
• uninterrupted
• unregenerate
• unrelenting
• unremitting
• unsleeping
• unswerving
• untiring
• unwavering
• unwearied
• unwearying
• wholehearted
• willful