The peculiar quavering certain singers experience whilst singing high-frequency lyrics, resulting in the distortion of certain syllables. Derived from Wubbering, wubbering heights. Can also occur when one is crying and speech is in the form of a wobbly sob--think blubbering. Example: She was really wubbering a hell of a lot after she got smacked in the face by that door.
WUBBERING
Meaning of WUBBERING in English
Slang English vocab. Английский сленговый словарь. 2012