to puzzle, perplex, baffle, bewilder (somebody); to afflict by being complicated, contradictory, or otherwise difficult to understand
To mix up, muddle up (one thing with another); to mistake (one thing for another).
To mix thoroughly; to confound; to disorder.
To be confused.
To deliberately make more confusing in order to conceal the truth.
To alter code while preserving its behavior but concealing its structure and intent.
Before leaving the scene, the murderer set a fire in order to obfuscate any evidence of their identity.
To make dark; to overshadow.