When it comes to finding synonyms for the phrase "out of wit," there are several options to choose from. One might use the term "at a loss for words" to describe a situation where they are unable to think of anything witty or clever to say. Alternatively, someone might be "drawing a blank" or "feeling blank" when trying to come up with something witty. They might also be "stumped" or "perplexed" by a situation, leaving them unable to think of anything clever to say. Ultimately, there are many ways to add some variety to your language when you want to describe someone who is out of wit.