unbuttoned

adj (fig 比喻) (feeling) free fromformality; relaxed 无拘束（感）的; 松弛的: her unbuttonedstyle of management 她放开手的管理方式.

unbeliever, unbelieving, unbend, unbending, unbiased, unbidden, unbind, unblemished, unblushing, unblushingly, unborn, unbounded, unbowed, unbreakable, unbridled, unbroken, unbuckle, unburden, unbusinesslike, unbutton, uncalled-for, uncannily, uncanny, uncared-for, unceasing, unceasingly, unceremonious, unceremoniously, uncertain, uncertainly, uncertainty, unchallenged, unchangeable, unchanging, uncharacteristic, uncharitable, uncharitably, uncharted, unchecked, unchristian,