1. (n.) Power of acute observation and deduction; discernment; perception\.

2. (n.) A sight or view of the interior of anything; a deep inspection or view; introspection; -- frequently used with into.

ESP a priori knowledge acuity acumen acuteness anschauung anticipation apperception appreciation appreciativeness astuteness awareness buddhi clairsentience clairvoyance cogency cognition cognizance comprehension consciousness critical discernment direct apprehension discernment extrasensory perception farseeingness farsightedness flair foresight foresightedness immediate cognition incisiveness inspiration intuition intuitionism intuitive reason intuitiveness intuitivism judgement judgment knowledge without thought longheadedness longsightedness lucidity mindfulness noesis note notice penetration perception perceptiveness percipience perspicaciousness perspicacity perspicuity perspicuousness precognition premonition providence psychometry realization recognition sagaciousness sagacity sageness sapience satori second sight second-sightedness sensibility sensitivity sharpness sixth sense subconscious knowledge subconscious perception trenchancy understanding unmediated perception vision wisdom