being unaware of, being ignorant of, not noticing, not realizing, being blind to, being heedless of, failing to notice
awareness - recognition - understanding - insight - discernment - appreciation - observation - cognition - interpretation - apprehension - realization - conception
Perception is the mental process through which sensory information from the environment is selected, organized, and interpreted by the brain. It involves the way we experience and make sense of stimuli received through our senses, such as sight, hearing, touch, taste, and smell. Perception is not a simple recording of reality; it is influenced by attention, expectations, prior knowledge, emotions, and context. As a result, different individuals can perceive the same situation in different ways. In a broader sense, the term can also refer to the way something is understood, evaluated, or regarded by people or society.