Synonyms and related words :
acuity, acuteness, agility, alertness, all-night vigil, attention, attentiveness, brightness, consciousness, insomnia, insomniac, insomnolence, insomnolency, keenness, lidless vigil, nimbleness, promptitude, promptness, punctuality, quickness, readiness, restlessness, sentience, sharpness, smartness, tossing and turning, vigil, wake, wakefulness