Whomping is a slang term used to describe something that is large, powerful, or impressive. However, if you're looking for an antonym to whomping, you might consider words such as puny, weak, or insignificant. These words would be a stark contrast to the fierce and mighty nature of whomping. Other antonyms might include small, diminutive, feeble, or frail. These words convey the opposite of whomping and paint a picture of something that is small and underwhelming. So, if you're trying to convey the opposite of whomping, consider using one of these antonyms to create a clear contrast between your descriptions.