"Wimping" is a slang word that describes someone who is weak and lacks courage. If you're looking for other words to describe such behavior, you could use terms like "cowardly," "timid," "fearful," "spineless," "soft," "feeble," "craven," "nervous," "trembling," "shaky," "fainthearted," "chicken-hearted," "squeamish," and "pusillanimous." Each of these words carries a slightly different connotation, so choose the word that best describes the type of wimping you're trying to convey. By using different synonyms, you can add depth and nuance to your writing or speech and create a more vivid picture of the behavior you're talking about.