Most happening is an adjective that refers to a situation or event that is exciting, lively, and enjoyable. However, there are times when we need words to describe the opposite of that. Some antonyms for most happening include dull, boring, unexciting, uneventful, lifeless, and dreary. When describing something that is not very exciting or interesting, these words can be used instead of most happening. For example, instead of saying "the party was the most happening event of the year," you could say "the party was quite dull and uneventful." These antonyms can help to provide a more accurate description of a situation or event.