Synonyms and related words :
advertence, advertency, alertness, all-night vigil, apperception, appreciation, appreciativeness, assiduity, assiduousness, attention, attention span, attentiveness, awareness, brain, care, carefulness, cognition, cognizance, concentration, concern, consideration, diligence, ear, earnestness, experience, faculties, feeling, head, heed, heedfulness, insight, insomnia, insomniac, insomnolence, insomnolency, intellect, intellectual gifts, intellectuals, intelligence, intentiveness, intentness, lidless vigil, mentality, mindfulness, noesis, note, notice, observance, observation, parts, percept, perception, realization, recognition, regard, regardfulness, remark, respect, response, response to stimuli, restlessness, sensation, sense, sense impression, sense perception, senses, sensibility, sensory experience, sentience, sleeplessness, thought, tossing and turning, vigil, wake, wakefulness, wise man, wits