noun, noun or participle which takes 'suru'
knowing clearly; clear knowledge
Formal, somewhat literary noun or suru-verb meaning to know something clearly or with certainty. Often used in contexts like 明知の上で (knowingly, with full knowledge) or 明知している (to be fully aware).
彼は危険を明知の上でその仕事を引き受けた。
He took on the job knowing full well the risks.
事実
Although he clearly knew the facts, he said nothing.