The phrase "catches drift" implies understanding of a situation or a conversation. To find antonyms that oppose this phrase, we could consider terms like misunderstanding, confusion, ignorance, or obliviousness. These antonyms describe situations where someone is not fully comprehending what is occurring or being discussed. For example, instead of saying "I catch your drift," we could say "I'm confused," "I don't understand," or "Can you explain that further?" By using these antonyms, we can clearly convey our lack of comprehension and ask for help or clarification to better understand the situation or conversation.