If you have a vague memory or idea of something, the memory or idea is not clear. They have only a vague idea of the amount of water available Waite's memory of that first meeting was vague. = faint + vaguely vague·ly Judith could vaguely remember her mother lying on the sofa
If something written or spoken is vague, it does not explain or express things clearly. The description was pretty vague. vague information. precise + vaguely vague·ly `I'm not sure,' Liz said vaguely They issued a vaguely worded statement. + vagueness vague·ness the vagueness of the language in the text
not precisely limited, determined, or distinguished; "an undefined term"; "undefined authority"; "some undefined sense of excitement"; "vague feelings of sadness"; "a vague uneasiness"
Unsettled; unfixed; undetermined; indefinite; ambiguous; as, a vague idea; a vague proposition
A vague shape or outline is not clear and is therefore not easy to see. The bus was a vague shape in the distance
If you describe someone as vague, you mean that they do not seem to be thinking clearly. She had married a charming but rather vague Englishman His eyes were always so vague when he looked at her