How to Say I Don’t Know

Formal to Casual
• I have absolutely no idea.
• I’m sorry, but I simply don’t know.
• Believe me, I wish I knew.
• I haven’t a clue.
• I don’t have all the facts to give a qualified response.
• I’m not informed enough to give a precise response.
• I’m not knowledgeable enough to have an opinion on the matter.
• I don’t know, but I’ll find out.
• Hang on, I’ll look it up.
• That’s a good question, but I don’t yet know the answer.
• I can’t say anything definitive either way.
• I will need to do more research.
• I’m going to have to plead ignorance.
• I don’t have enough information on the subject.
• I’m not sure—let me find out for you.
• I can’t really tell.
• I’m not exactly sure.

Conversation videos:
https://www.youtube.com/channel/UCV0wcNQ0zQPFcDad8wTK_XQ/videos