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to keep an eye on

to keep an eye on

408 2.4
To watch someone or something carefully to make sure nothing bad happens
  • phrasal verb
  • Informal
translation icon : echar un ojo a
  • Please keep an eye on the stove while I finish preparing dinner.
  • keep an eye on things

So we have been keeping an eye on the the sex trafficking.

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Examples

  • Ashley, keep an eye on your sister.

  • It's hard for me to always keep an eye on my son.

  • Are you keeping an eye on the House for us?

  • Always keep an eye on it and we'll talk to you soon.

  • So now we got to keep an eye on these guys like, oh, do we mess up?

  • Ah, but you see my job is to keep an eye on you.

  • I want you up on the bridge where I can keep an eye on you.

    Fiction book (1991)
  • Anyway, I thought you were keeping an eye on that poor little girl.

    Fiction book (1990)
  • I want to keep an eye on Jason.

  • Keep an eye on those two.

Synonyms

to watch
vsto keep an eye on
1.0

To be careful and pay attention to possible danger

is protective monitoring aimed at preventing harm rather than momentary vigilance
to pay attention
vsto keep an eye on
1.6

To focus on someone or something and notice carefully

is continuous protective watching rather than short mental focus or listening
to monitor
vsto keep an eye on
627 3.5

To watch or check something over time

is human, safety focused watching rather than technical long term tracking
to observe
vsto keep an eye on
619 2.4

To watch something carefully to learn about it

is watching mainly to keep someone safe rather than to study them
to look after
vsto keep an eye on
472 1.1

Take care of someone or something to keep them safe and working

is mainly brief monitoring to prevent immediate harm rather than long term care
to look out for
vsto keep an eye on
291 3.0

Watch carefully to notice danger or help someone

is focused watching to stop harm rather than only offering help
to watch over
vsto keep an eye on
145 2.3

To look after someone or something to keep them safe

is general watching and monitoring focused on safety rather than supervision
to keep an eye out
vsto keep an eye on
  • Informal
134 3.2

Watch carefully for someone or something

is broader safety monitoring over time rather than occasional eager lookout
to keep one's eyes open
vsto keep an eye on
97 3.8

Watch carefully for danger or a chance

is active guarding to prevent harm rather than casual alertness
on the lookout for
vsto keep an eye on
47 3.4

Watching carefully to find someone or something

is broader safety watching to prevent harm rather than actively searching
to keep tabs on
vsto keep an eye on
  • Informal
43 3.9

To watch someone or something closely over time to see what happens

is watching primarily to prevent harm not merely to follow progress
to keep watch
vsto keep an eye on
30 3.1

To stay alert and watch for danger or trouble

is regular careful monitoring intended to prevent bad events not just observe
to stay on top of
vsto keep an eye on
27 4.1

To keep informed and in control to avoid problems

is immediate protective watching rather than managing or administrative control
to keep one's eyes peeled
vsto keep an eye on
  • Informal
16 4.6

Watch carefully for something important or dangerous

is ongoing safety monitoring rather than a single focused search
to stand watch
vsto keep an eye on
  • Jargon
10 3.4

To stay awake and guard people or a place

is a less formal everyday watching to stop harm rather than duty
to surveil
vsto keep an eye on
9 8.4

To watch people or places closely to get information and stop crime

is ordinary safety watching rather than formal investigative observation
to keep a close watch
vsto keep an eye on
8 3.0

Look at a person or thing very carefully for a while to notice problems

is the general act of watching to prevent harm rather than intense checking
to keep guard
vsto keep an eye on
2 3.1

To stay and watch to protect people or a place

is broader watching not limited to active guarding or defense roles
to keep an eye peeled
vsto keep an eye on
  • Informal
1 6.0

Watch carefully for something you expect to see

is general protective observation rather than narrowly searching for one thing
to stand sentinel
vsto keep an eye on
  • Literature
1 7.0

To watch and guard a place or person

is everyday safety monitoring rather than fixed guarding post duties
to keep one's eyes skinned
vsto keep an eye on
  • UK
8.2

Watch carefully for danger or a chance to act

is protective monitoring in duties rather than vivid or idiomatic alertness
to obs
vsto keep an eye on
  • Informal
9.9

To watch people quietly to see how they behave

is formal or purposeful monitoring aimed at safety rather than casual attention

How Watchful

to keep an eye on
  • Informal
408 2.4
to watch
1.0
to glance at
150 2.0

Surface Forms

keep an eye on infinitive
kept an eye on past participle
keeping an eye on present participle
keeps an eye on third person singular

Morphology

keep + an + eye + on

The meaning 'to watch or monitor' is directly and transparently derived from 'keep' (to maintain), 'eye' (observation, metonymically ‘watch’), and 'on' (indicating the target). This is a productive English pattern (keep + NP + on) and has parallels in many languages, so a B1 learner who knows the constituents would very likely infer the meaning.

Etymology

Keep an eye on comes from the simple image of keeping your eye on someone or something so you can see if anything goes wrong. So it means 'to watch or monitor' someone or something closely to make sure nothing bad happens.