2. knowing, percipient. Conscious, aware, cognizant refer to an individual sense of recognition of something within or without oneself. Conscious implies to be awake or awakened to an inner realization of a fact, a truth, a condition, etc.: to be conscious of an extreme weariness. Aware lays the emphasis on sense perceptions insofar as they are the object of conscious recognition: He was aware of the odor of tobacco. Cognizant lays the emphasis on an outer recognition more on the level of reason and knowledge than on the sensory level alone: He was cognizant of their drawbacks.