Thesaurus

Synonyms for Alert include:

agile, alert, alive, animated, apt, argus-eyed, astir, awake, awakened, aware, born, bouncing, bouncy, brainy, breezy, bright, brilliant, bubbling, bubbly, burbling, burbly, clever, cognisant, cognizant, conscious, effervescent, effusive, energetic, fly, gushing, heads-up, innate, insomniac, intelligent, lidless, live, lively, natural, nimble, on the alert, on the job, open-eyed, peppy, precocious, prehensile, quick, ready, rested, scintillating, searching, self-aware, self-conscious, semiconscious, sensible, sensitive, sentient, sleepless, smart, smart as a whip, sparkly, spirited, trenchant, unsleeping, up, vigilant, voluntary, wakeful, waking, warm, wary, watchful, wide-awake, zippy

alert is a ADJ.

alarm, alaru, alarum, alert, alerting, qui vive, warning signal

alert is a NOUN.

alarm, alert

alert is a VERB.