Alert verb – To give notice to beforehand especially of danger or risk. Tell and alert are semantically related. In some cases you can use "Tell" instead a verb "Alert". Nearby Words: alertness, alerted, alerting, alerter
So Much for Stealth: Screwing up during the stealth portion of missions will alert all nearby enemies, causing your partner to tell you to "go loud" (or something similar) or to get the hell out of there.