absorbed absorbed in adamant artless assiduous bigoted bluff blunt born yesterday bound bound and determined buried in candid caught up in childlike committed confiding constant contemplating contemplative continuing decided decisive dedicated definite determined devoted devoted to diehard diligent direct dogged earnest enduring engaged engrossed engrossed in faithful frank guileless immersed in immutable inalterable indefatigable indomitable industrious inexorable ingenu ingenuous innocent insistent intent intent on invincible involved lasting lost in loyal meditating meditative monomaniacal monopolized naive never-tiring obdurate obsessed obstinate occupied open openhearted outspoken patient patient as Job permanent perseverant persevering persistent persisting pertinacious plain plodding plugging preoccupied purposeful rapt relentless resolute resolved rigid sedulous serious simple simplehearted simpleminded sincere single single-hearted sleepless slogging stable steadfast steady straightforward stubborn studious studying submerged in swept up taken up with tenacious tireless totally absorbed trustful trusting unabating unbending uncompromising unconquerable undaunted undiscouraged undissembled undrooping unfailing unfaltering unflagging unflinching unguarded unintermitting uninterrupted unnodding unrelaxing unrelenting unremitting unreserved unsleeping unsophisticated unsuspicious unswerving untiring unvarnished unwary unwavering unwearied unwearying unwinking unyielding utterly attentive weariless wholehearted wrapped in wrapped up in