"Catching drift" is a phrase that means to understand the flow or direction of a conversation or situation. Antonyms of this phrase could include "misunderstanding," "ignorance," or "confusion." When someone is not catching the drift, they may be lost in the conversation or not fully comprehending what is going on. It's important to stay engaged and attentive in a discussion to avoid these antonyms. By actively listening and asking questions for clarification, one can ensure they are catching the drift of the conversation and moving in the right direction.