vague Definition
vague adjective
1. not explicit: not clear in meaning or intention
a vague proposal
2. not distinctly seen: not having a clear or perceptible form
a vague form in the shadows
3. not clearly perceived in mind: not clearly felt, understood, or recalled
I have a vague recollection of it.
4. unclear in thinking: unclear or incoherent in thinking or expression
made vague mutterings in his sleep
[Mid-16th century. Directly or via French < Latin vagus "wandering, inconstant"]