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Use "gesticulating" in a sentence
"The doors closed, leaving our friends gesticulating from the platform."
"Not being able to remember their names at first, I turned to more primitive forms of communication such as gesticulating to draw their attention and strike up a conversation."
"They watched together in silence as the girl turned and engaged the doorman in what seemed to be a bit of friendly banter and he responded, gesticulating with his hand."