"unforced" in the adjective sense
1. uncoerced, unforced, willing
not brought about by coercion or force
"the confession was uncoerced"
2. unforced, unstrained
not resulting from undue effort not forced
"a voice with a pleasingly unforced quality"
"his playing is facile and unstrained"
Source: WordNet® (An amazing lexical database of English)
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