fain, volitionally, willingly

willingly, unwittingly, unknowingly, reluctantly, involuntarily, begrudgingly, forcibly, unhappily, unthinkingly, heedlessly, unsuspectingly, voluntarily, unbeknownst, masochistically, irrevocably, unceremoniously, unconsciously, grudgingly, happily, unbeknown, wittingly, foolishly, shamefacedly, subsequently, ignobly, thoughtlessly, inadvertently, stealthily, submissively, unwisely, subserviently, uncomplainingly, inextricably, tardily, latently, resentfully, inexorably, inconveniently, fortuitously, vestal virgin, ignominiously, fatefully, rapaciously, hesitantly, vicariously, insidiously, providentially, mortally, unavoidably, surreptitiously, unintentionally, consequently, sinisterly, humiliatingly, mysteriously, nobly, trustingly, inescapably, gladly, unrecognizably, irreversibly, readily, intractably, meekly, knowingly, vilely, inevitably, thereupon, impulsively, unquestioningly, tacitly, metaphorically, virtuously, perforce, incestuously, regretfully, hesitatingly, advertently, obediently, melodramatically, obligingly, disreputably, inexplicably, vulnerably, suddenly, callously, hurtfully, graciously, unbidden, imprudently, apathetically, wordlessly, discreetly, carelessly, vengefully, reticently, irretrievably, psychically, supinely, brusquely, amorously, casually

accession, assenting, begrudge, grudge, relinquished, resent, submit, surrendered, take, undergo