keep tabs on (someone or something)

keep tabs on (someone or something)

To routinely monitor or observe someone or something; to keep track of someone or something. It was revealed that the FBI kept tabs on him for years just because he once attended a meeting of a radical group. Keep tabs on the amount of feedback we get so that we know how many people this issue affects.
See also: keep, on, tab

keep tabs on

Observe carefully, keep a record of. For example, I hate having my boss keep tabs on my every move, or We've got to keep tabs on outgoing mail so we can keep track of postage. This expression uses to tab in the sense of "an account." [Late 1800s] Also see keep track.
See also: keep, on, tab

keep tabs on someone/something

COMMON If you keep tabs on someone or something, you make sure that you know what they are doing or what is happening to them, often in order to control them. We know that somebody was keeping tabs on her. It's their job to keep tabs on the financial situation. Note: Originally, this was an American expression which uses an American sense of `tab', meaning an account or bill, which can be used to keep a record of what someone spends.
See also: keep, on, someone, something, tab

keep tabs (or a tab) on

monitor the activities or development of; keep under close observation. informal
1978 Mario Puzo Fools Die Jordan knew that Merlyn the Kid kept tabs on everything he did.
See also: keep, on, tab

keep tabs on

Informal
To observe carefully over time: Let's keep tabs on expenditures.
See also: keep, on, tab