obscure

obscure    [uh b-SKYOO r]

adjective.  unclear, vague, uncertain, unknown;  hard to see, hard to understand
verb.  to make obscure, unclear, hard to understand

"The truth is that many aspects of a war's outcome remain obscure for years."
"The movie is full of obscure references that only pop culture enthusiasts will understand."
"She suggested that a small group of scientists cooperating with think tanks and businesses managed to obscure basic truths about the harms of both."
"His face is obscured in photos shown to the jurors."

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