What is another word for most flapping?
Pronunciation: [mˈə͡ʊst flˈapɪŋ] (IPA) 
The phrase "most flapping" implies a lot of movement, agitation, or commotion. Some synonyms that can be used to convey a similar meaning include "frantic," "tumultuous," "chaotic," "wild," "hectic," "animated," "energetic," "uncontrollable," "frenzied," "feverish," "hysterical," "boisterous," "uproarious," and "raucous." Each of these words adds a slightly different nuance to the original phrase, but they all share the sense of lively movement or intense activity. Depending on the context and tone of the writing, one of these synonyms may be more appropriate than others.
