modified
submissive, acquiescent, docile, tractable, yielding, relinquishing, gentle, obedient, manageable, willing, agreeable, ready, amenable, pliant, compliant, easily managed, well-disposed, satisfied, quiescent, quiet, patient, unresisting, uncomplaining, tolerant, calm, reconciled, adjusted, adapted, accommodated, tame, biddable, nonresisting, passive, philosophical, renouncing, unassertive, subservient, deferential, long-suffering.
Antonyms rebellious*, recalcitrant, resistant.