kliːn klin kleːn ˈplʌm.ət completely; used as intensifiers clean forgot the appointment I'm plumb (or plum) tuckered out exactly fell plumb in the middle of the puddle conforming to the direction of a plumb line adjust with a plumb line so as to make vertical examine thoroughly and in great depth measure the depth of something exactly vertical the tower of Pisa is far out of plumb weight with lead the metal bob of a plumb line