unforced

done, made, or given with one's own free will the participation of the people on the project must be unforced, or it really isn't a volunteer effort Synonyms freewill, self-imposed, uncoerced, voluntary, volitional, volunteer, willingRelated Words discretionary, elective, optional; impulsive, instinctive, spontaneous, unpremeditated; conscious, deliberate, intentional, knowing, willful (or wilful)Near Antonyms compulsory, enforced, mandatory, necessary, nonelective, obligatory, ordered, requiredAntonyms coerced, compelled, forced, involuntary, nonvoluntary, unwilled, will-less