| keep under surveillance(verb, expression, idiom, cover, keep) |
| keep watch over(expression, idiom) |
| look out for(expression, idiom) |
| look to |
| lookout(verb, cover, keep, secure, observe) |
| maintain(verb, keep, do, manage, protect) |
| manage(verb, keep, maintain, do, protect) |
| matronize |
| not missing a trick(expression, adjective, idiom, ready, alert) |
| observant(adjective, alert, careful, cautious, attentive) |
| observe(verb, cover, keep, secure, defend) |
| on guard(expression, adjective, alert, careful, cautious) |
| on the ball(expression, adjective, idiom, alert, careful) |
| on the job(expression, adjective, idiom, alert, careful) |
| on the qui vive(expression, adjective, idiom, alert, careful) |
| on the watch(expression, adjective, idiom, ready, alert) |
| open-eyed(adjective, alert, careful, cautious, attentive) |
| oversee(verb, cover, keep, maintain, secure) |
| patrol(verb, cover, keep, secure, observe) |
| perform(verb, keep, maintain, do, manage) |