What writing technique is used for fumbling stumbling bumbling?

The writing technique used in the phrase "fumbling, stumbling, bumbling" is called alliteration, where the repetition of initial consonant sounds creates a rhythmic and engaging effect. This technique enhances the auditory quality of the text and emphasizes the clumsiness or chaos being described. Additionally, the use of gerunds adds a sense of ongoing action, contributing to the vividness of the imagery.