alert
Cross references: 1. intelligent 2. watchful 1. alert \*-'l*rt\ aj [It all'erta, lit., on the ascent] 1a: watchful and prompt to meet danger 1b: quick to perceive and act 2: ACTIVE, BRISK - alert.ly av 2. alert n 1: an alarm or other signal of danger 2: the period during which an alert is in effect : on the lookout for danger - on the alert 3. alert vt : to call to a state of readiness : WARN