Crossword Genius

Like good sentries (5)

Ross

I believe the answer is:

alert

'like good sentries' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for alert that I've seen before include "Watchful; warning" , "Prompt" , "Put on guard, warn" , "alarm" , "Wide-awake and watchful" .)

I've seen this clue in The Chronicle of Higher Education, the King Feature Syndicate and the Wall Street Journal.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.