Awareness is the state of being conscious or the quality of being perceptually knowledgable. It is also the ability to perceive, feel, know, or be cognizant of events. There are many different states of awareness. To be asleep or in a state of psychosis is to have a lack of awareness. Being intoxicated on alcohol or drugs can lead to a reduction of awareness. Someone who has high anxiety levels or is paranoid may have a heightened sense of awareness.