noun - a word or a phrase that is only used in informal speech, not in formal writing

verb - to show when we don't like an actor's performance, a speaker's speech etc. by shouting 'boo'

interjection - the word or sound we make when we don't like an actor's performance, a speaker's speech etc.

noun - the process of improving a speech, piece of writing, etc., or something that has been changed in this way

verb - to make unvoluntary repetition of certain syllables or sounds, esp. because of being nervous of having a speech impediment

verb - to give a religious speech, to tell somebody what to do and try to persuade them that it is right

adjective, technical - spoken or written in the native language of a particular region or group; characteristic of everyday, informal, or local speech or style

verb - to speak in a way that you repeat sounds and have difficulty pronouncing things correctly, especially because you are nervous or have a speech disorder