Obfuscate often implies someone is purposely making things unclear. Politicians sometimes obfuscate their messages to hide the true intentions.
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Technical Usage
It's frequently used in technical or formal contexts to indicate intentional complexity. Software developers obfuscate code to protect intellectual property.
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Negative Connotation
It often carries a negative connotation, suggesting dishonesty or evasion. He tried to obfuscate his role in the scandal.