Adjective
1. not clearly understood or expressed;
"an obscure turn of phrase""an impulse to go off and fight certain obscure battles of his own spirit"-Anatole Broyard"their descriptions of human behavior become vague, dull, and unclear"- P.A.Sorokin"vague...forms of speech...have so long passed for mysteries of science"- John Locke2. not precisely limited, determined, or distinguished;
"an undefined term""undefined authority""some undefined sense of excitement""vague feelings of sadness""a vague uneasiness"3. lacking clarity or distinctness;
"a dim figure in the distance""only a faint recollection""shadowy figures in the gloom""saw a vague outline of a building through the fog""a few wispy memories of childhood"