I think I have a vague understanding of how it works. He bore a vague resemblance to the famous actor. [=he looked a little like the famous actor]. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. b: not able to be described clearly: not clearly or strongly felt.He longed in some vague way for something different.She felt a vague sense of uneasiness when she was around him.=he looked a little like the famous actor]. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. b: not able to be described clearly: not clearly or strongly felt. He longed in some vague way for something different. She felt a vague sense of uneasiness when she was around him.