unutterable

a.不可言传的

untitled, untold, untouchable, untouched, untoward, untrammelled (US also untrammeled), untreated, untried, untrue, untrustworthy, untruth, untruthful, untruthfully, untruthfulness, unturned, untutored, unusable, unused, unusual, unusually, unutterably, unvaried, unvarnished, unveil, unversed, unvoiced, unwaged, unwanted, unwarily, unwariness, unwarrantable, unwarranted, unwary, unwelcome, unwholesome, unwieldiness, unwieldy, unwilling, unwillingly, unwillingness,