Pooh/puː/ Definition 1 of 3Pro Tip 1/3Expressing Disgust Use 'pooh' when something is unpleasant or offensive to your senses, especially smell. Pooh, what's that terrible odor? Pro Tip 2/3Strong Contempt When strongly disliking someone's actions or attitudes, 'pooh' can show your disdain. He's cheating again? Pooh, how despicable! Pro Tip 3/3Colloquial Warning Remember, 'pooh' is informal; avoid using it in formal situations or with people you respect. Pooh, don't step there!