lookout

be (one's) (own) lookout

To be a problem or difficulty that one has caused oneself. Primarily heard in UK. If you stay up till 3 AM, it's your own lookout if you sleep through your alarm.
See also: lookout

be on the lookout

To be watching for something or someone. Be on the lookout for my email! It will have all the instructions you need for the project. A: "What are you guys doing?" B: "We're on the lookout for Mom's car, so we can tell Dad to stop working on her surprise gift when she gets here."
See also: lookout, on

keep a sharp lookout (for something or someone)

To remain vigilant or carefully watchful (for something or someone). They should be arriving any minute, so keep a sharp lookout. Keep a sharp lookout for a Christmas present we could give your mother. Keep a sharp lookout for the health inspector, we heard he'll be doing a surprise inspection someday soon.
See also: keep, lookout, sharp, something

look out

1. verb To literally peer or gaze out (of a place or thing). My cat loves looking out the window and watching all the birds and squirrels outside.
2. verb To be aware of one's surroundings in order to look for or notice something. Often used as an imperative. Look out—there's slippery rocks on that trail! I always look out for deals when I'm shopping.
3. noun One who keeps watch for potential problems or intruders in a particular situation. In this usage, the phrase is usually spelled as one word ("lookout"). We can't get caught, so you act as a lookout and give us a sign if you hear Mom or Dad coming.
4. noun The act of keeping watch for potential problems or intruders in a particular situation. In this usage, the phrase is usually spelled as one word ("lookout"). We can't get caught, so you keep a lookout and give us a sign if you hear Mom or Dad coming.
See also: look, out

on the lookout

Watching for something or someone. Be on the lookout for my email in the next few days. It will have all the instructions you need for the project. A: "What are you guys doing?" B: "We're on the lookout for Mom's car, so we can tell Dad to stop working on her surprise gift when she gets here." We need someone on the lookout for the police while we work on the lock.
See also: lookout, on
Farlex Dictionary of Idioms.

look out (of) something

to gaze outward from inside something. (Of is usually retained before pronouns.) Look out of the window and see if it is raining. I looked out of the door to see what the weather was like.
See also: look, out

on the lookout (for someone or something)

watchful for someone or something. Be on the lookout for signs of a storm. I'm on the lookout for John, who is due here any minute.
See also: lookout, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

keep an eye out for

Also, keep a sharp lookout for. Be watchful for something or someone, as in Keep an eye out for the potholes in the road, or They told him to keep a sharp lookout for the police. The first expression, sometimes amplified to keep a sharp eye out for, dates from the late 1800s, the variant from the mid-1700s. Also see have one's eye on, def. 1; keep a weather eye; keep one's eyes open; look out.
See also: eye, keep, out

look out

Also, watch out. Be careful, be watchful, as in Look out that you don't slip and fall on the ice, or Watch out! There's a car coming. [c. 1600] Also see look out for.
See also: look, out

on the lookout

Also, on the watch. Vigilant, alert, as in Be on the lookout for the twins-they're somewhere on this playground, or He was on the watch for her arrival. Both phrases were originally used with upon. Upon the lookout was originally nautical usage, meaning "on duty being watchful" (as for another ship, rocks, or land); it appeared in the mid-1700s, and on replaced upon about a century later. Upon the watch was first recorded in Daniel Defoe's Robinson Crusoe (1719), and on the watch in Jane Austen's Sense and Sensibility (1797).
See also: lookout, on
The American Heritage® Dictionary of Idioms by Christine Ammer.

keep an eye out (or open) for

look out for something with particular attention.
1996 Guardian Keep an eye open for kingklip, a delectable fish, and the superb local hake.
See also: eye, keep, out

be on the lookout

1 keep searching for someone or something that is wanted. 2 be alert to danger or trouble.
The word lookout , which originated in naval and military contexts, was first applied, in the late 17th century, to sentries or other people employed to keep watch. The sense of ‘the action of keeping watch’, as used in this expression, dates from the mid 18th century.
See also: lookout, on
Farlex Partner Idioms Dictionary

be ˈsb’s (own) lookout

(British English, informal) be somebody’s problem because they are responsible for causing it: If he wants to invest all his money in one company, that’s his lookout. It’s my own lookout if I fail this exam.
See also: lookout

be on the ˈlookout (for somebody/something)

,

keep a ˈlookout (for somebody/something)

be searching (for somebody/something): We’re always on the lookout for good computer programmers. I’m on the lookout for a good book on German history.
See also: lookout, on
Farlex Partner Idioms Dictionary

look out

v.
To be watchful or careful; take care: If you don't look out, you could fall on the ice. The campers looked out for each other on the hike.
See also: look, out
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • for (one's) (own) sake
  • for sake
  • be in hot water
  • wash (one's) hands of (someone or something)
  • wash hands of
  • wash one's hands of
  • wash your hands of
  • wash your hands of somebody/something
  • wash your hands of something/someone
  • keep in sight
References in periodicals archive
| The NCI is a charity which runs around 56 lookouts around the coast of Wales and England, reporting directly to the coastguard.
Police say recovering the bodies from the base of the lookout will be difficult
class="es-text-centerandphoto=p3866336" class="align-center-smSource: TASReresenkaThis unusual lookout tower is 11 metres high and stands in a field in the Kosice self-governing region.
Powered by the largest dataset of mobile code in existence, the Lookout
Porthcawl's Old Pilot's Lookout Tower is being granted Declared Facility Status
"While not all of these applications have been confirmed to download the malicious spying capability, Igexin could have introduced that functionality at their convenience," Lookout security engineers Adam Bauer and Christoph Hebeisen said in their report.
In an email to Ars Technica, Lookout researcher Michael Flossman said that the apps might also be distributed through direct phishing texts with download links, or through non-Google app markets.
The Confederates held the high ground, Lookout Mountain and Missionary Ridge, but they could not completely seal off Chattanooga from the north.
The previous month, the Town of Sioux Lookout announced Sault Ste.
Justice Secretary Vitaliano Aguirre said the lookout order was necessary in the event that De Lima and others - who have information on the alleged peddling and distribution of drugs at the New Bilibid Prisons (NBP) - flee the country.
HUSSEIN LOOKOUT, Israel: On a hilltop lookout near Israel's border with Lebanon, U.S.
The cameras are typically perched on locations with lookout towers that previously were staffed by smoke watchers.
14 August 2014 - US mobile security firm Lookout said it had raised USD150m (EUR112.3m) in a funding round led by T Rowe Price Associates Inc-managed funds.
REDCAR'S Coastwatch service has moved into a temporary new home after its old lookout tower was closed for refurbishment.
Be On The Lookout, 15-year-old got out of vehicle in Westboro, checked area, male party at home, all set, report taken, 32 Lyman St., Westboro.