Synset

not clearly expressed or understood
<adj.all>   freq. cnt.: 22 freq. cnt.: 18 freq. cnt.: 4

obscure

vague

sample sentences

"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