Definition: not clearly understood or expressed
Usage: 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 Locke
Similar words: unclear
Definition: not clear to the mind
Usage: the law itself was unclear on that point; the reason for their actions is unclear to this day
Definition: not precisely limited, determined, or distinguished
Usage: an undefined term; undefined authority; some undefined sense of excitement; vague feelings of sadness; a vague uneasiness
Similar words: undefinable, indefinable
Definition: not capable of being precisely or readily described; not easily put into words
Usage: an indefinable feeling of terror; an abstract concept that seems indefinable
Synonyms: faint, shadowy, dim, vague, wispy
Definition: lacking clarity or distinctness
Usage: 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
Similar words: indistinct
Definition: not clearly defined or easy to perceive or understand
Usage: indistinct shapes in the gloom; an indistinct memory; only indistinct notions of what to do