Learner's definition of VAGUE
[also more vague; most vague]
1 a : not clear in meaning : stated in a way that is general and not specific
b : not thinking or expressing your thoughts clearly or precisely
The instructions she left were vague and difficult to follow.
He gave only a vague answer.
The judges determined that the law was too vague to be fairly enforced.
She has been vague about her plans for college.
When I asked him what they talked about, he was rather vague. [=he did not tell me exactly what they talked about]
2 a : not completely formed or developed
b : not able to be described clearly : not clearly or strongly felt
We had only a vague idea/notion of where we were.
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]
He longed in some vague way for something different.
She felt a vague sense of uneasiness when she was around him.
I had the vague impression that they were withholding information.
3 : not able to be seen clearly