- 1monitor something monitor what, how, etc… to watch and check something over a period of time in order to see how it develops, so that you can make any necessary changes synonym track Each student's progress is closely monitored.
- 2monitor something to listen to telephone calls, foreign radio broadcasts, etc. in order to find out information that might be useful
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NAmE//ˈmɑnət̮ər//Verb Forms present simple I / you / we / they monitor
he / she / it monitors
past simple monitored
-ing form monitoring