Synonyms for alert

alarm, attentive, awake, aware, buzzer, careful, cautious, chary, clear-headed, cognizant, conscious, eagle-eyed, heedful, inform, keen-eyed, lucid, mindful, notification, notify, observant, ready, reminder, sharp, sharp-eyed, shrewd, signal, siren, vigilant, wakefulness, warning, wary, watchful, watchfulness