term:

Willful Blindness

willful blindness n

: deliberate failure to make a reasonable inquiry of wrongdoing (as drug dealing in one's house) despite suspicion or an awareness of the high probability of its existence NOTE: Willful blindness involves conscious avoidance of the truth and gives rise to an inference of knowledge of the crime in question.

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.