Synonyms:
- Spartan,
- accepting,
- armed with patience,
- assiduous,
- balking,
- balky,
- bigoted,
- bound,
- bound and determined,
- bulldogged,
- bulletheaded,
- bullheaded,
- case-hardened,
- committed,
- constant,
- continuing,
- decided,
- decisive,
- dedicated,
- definite,
- determined,
- devoted,
- diligent,
- disciplined,
- dogged,
- dogmatic,
- earnest,
- endurant,
- enduring,
- faithful,
- fanatic,
- forbearing,
- hardheaded,
- headstrong,
- immutable,
- inalterable,
- indefatigable,
- indomitable,
- indulgent,
- industrious,
- insistent,
- intolerant,
- invincible,
- lasting,
- lenient,
- long-suffering,
- longanimous,
- loyal,
- mulish,
- never-tiring,
- obstinate,
- opinionated,
- overzealous,
- patient,
- patient as Job,
- permanent,
- perseverant,
- persistent,
- persisting,
- pertinacious,
- philosophical,
- pigheaded,
- plodding,
- plugging,
- preoccupied,
- purposeful,
- rapt,
- relentless,
- resolute,
- resolved,
- restive,
- sedulous,
- self-controlled,
- self-willed,
- serious,
- set,
- sincere,
- single-minded,
- sleepless,
- slogging,
- stable,
- steadfast,
- steady,
- stiff-necked,
- stoic,
- strong-willed,
- strongheaded,
- stubborn,
- sulky,
- sullen,
- tenacious,
- tireless,
- tolerant,
- tolerating,
- tolerative,
- unabating,
- unconquerable,
- uncooperative,
- undaunted,
- understanding,
- undiscouraged,
- undrooping,
- unfailing,
- unfaltering,
- unflagging,
- unflinching,
- unintermitting,
- uninterrupted,
- unnodding,
- unregenerate,
- unrelaxing,
- unrelenting,
- unremitting,
- unsleeping,
- unswerving,
- untiring,
- unwavering,
- unwearied,
- unwearying,
- unwinking,
- utterly attentive,
- weariless,
- wholehearted,
- willful