unfettered

adj. 无忧无虑的

unexplained, unfading, unfailing, unfailingly, unfair, unfairly, unfairness, unfaithful, unfaithfully, unfaithfulness, unfamiliar, unfamiliarity, unfashionable, unfasten, unfathomable, unfavorable, unfeeling, unfeelingly, unfeigned, unfeignedly, unfinished, unfit, unflagging, unflaggingly, unflappability, unflappable, unflinching, unflinchingly, unfocused, unfold, unforeseen, unforgettable, unforgivable, unformed, unforseen, unfortunate, unfortunately, unfounded, unfreeze, unfriendly,