The word "捂脸" is formed by combining the character "捂", which means to cover with the hand and is itself composed of the hand radical "扌" for meaning and the component "吾" for sound, with the character "脸", which means face and is composed of the body radical "月" for meaning and the component "佥" for sound; together they create a verb-object structure denoting the action of covering the face with the hand.