keep an eye on

keep  (kp)

v. kept, keep·ing, keeps

v.tr.

1. To retain possession of: kept the change; must keep your composure.

2. To have as a supply: keep an ax in the shed.

3.

a. To provide (a family, for example) with maintenance and support: "There's little to earn and many to keep" (Charles Kingsley).

b. To support (a mistress or lover) financially.

4. To put customarily; store: Where do you keep your saw?

5.

a. To supply with room and board for a charge: keep boarders.

b. To raise: keep chickens.

6. To maintain for use or service: an urbanite who didn't keep a car.

7. To manage, tend, or have charge of: Keep the shop while I'm away.

8. To preserve (food).

9. To cause to continue in a state, condition, or course of action: tried to keep the patient calm.

10.

a. To maintain records in: keep a yearly diary.

b. To enter (data) in a book: keep financial records.

11.

a. To detain: was kept after school.

b. To restrain: kept the child away from the stove; kept the crowd back with barriers.

c. To prevent or deter: tried to keep the ice from melting.

d. To refrain from divulging: keep a secret.

e. To save; reserve: keep extra money for emergencies.

12. To adhere or conform to; follow: keep late hours.

13. To be faithful to; fulfill: keep one's word.

14. To celebrate; observe.

v.intr.

1. To remain in a state or condition; stay: keep in line; keep quiet; kept well.

2. To continue to do: keep on talking; keep guessing.

3. To remain fresh or unspoiled: The dessert won't keep.

4. To restrain oneself; hold oneself back: I couldn't keep from eavesdropping.

n.

1. Care; charge: The child is in my keep for the day.

2. The means by which one is supported: earn one's keep.

3.

a. The stronghold of a castle.

b. A jail.

Phrasal Verbs:

keep at

To persevere in work or an action.

keep down

1. To prevent from growing, accomplishing, or succeeding: keep the revolutionaries down.

2. To hold under control or at a reduced level: Keep your voice down.

3. To refrain from vomiting: Although seasick, I managed to keep my food down.

keep off

To stay away from.

keep to

To adhere to: keep to the original purpose.

keep up

1. To maintain in good condition: kept up the property.

2.

a. To persevere in; carry on: We asked her to stop talking, but she kept it up.

b. To preserve or sustain: kept up the appearance of friendship.

3. To continue at the same level or pace: The snow kept up all day.

4. To continue to pay off (a financial obligation).

5. To match one's competitors, colleagues, or neighbors in success or lifestyle: couldn't keep up with his friends who went into business.

6. To remain adequately informed: loved to keep up on the gossip.

Idioms:

for keeps

1. For an indefinitely long period: gave the ring to me for keeps.

2. Seriously and permanently: We're separating for keeps.

keep an eye on

1. To watch over attentively; mind.

2. To watch closely or carefully: keep your eye on the ball.

keep an eye out

To be watchful.

keep a stiff upper lip

To be courageous or stoic in the face of adversity.

keep company

1. To carry on a courtship: a couple who kept company but never married.

2. To socialize or associate: keeps company with some tough thugs.

keep (one's) chin up

To be stalwart, courageous, or optimistic in the face of difficulty.

keep (one's) eyes open/peeled

To be on the lookout.

keep (one's) nose clean Informal

To stay out of trouble.

keep pace

To stay even with others, as in a contest.

keep (someone) company

To accompany or remain with.

keep the wolf from the door

To avoid the privation and suffering resulting from a lack of money: Both spouses had to work in order to keep the wolf from the door.

keep time

1. To indicate the correct time.

2. Music To maintain the tempo or rhythm.

keep to (oneself)

1. To shun the company of others: She kept to herself all morning.

2. To refrain from divulging: He kept the news to himself.

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[Middle English kepen, from Old English cpan, to observe, seize.]

Synonyms: keep, retain, withhold, reserve
These verbs mean to have and maintain in one's possession or control. Keep is the most general: We received a few offers but decided to keep the house.
Retain means to continue to hold, especially in the face of possible loss: Though unhappy, he retained his sense of humor.
Withhold implies reluctance or refusal to give, grant, or allow: The tenant withheld his rent until the owner fixed the boiler.
To reserve is to hold back for the future or for a special purpose: The farmer reserved two acres for an orchard. See Also Synonyms at observe.

Thesaurus

Verb

1.

keep an eye on - follow with the eyes or the mind; "Keep an eye on the baby, please!"; "The world is watching Sarajevo"; "She followed the men with the binoculars" watch over, watch, observe, follow check, check into, check out, check over, check up on, suss out, look into, go over - examine so as to determine accuracy, quality, or condition; "check the brakes"; "Check out the engine" trace, follow - follow, discover, or ascertain the course of development of something; "We must follow closely the economic development is Cuba" ; "trace the student's progress" keep tabs on - keep a record on or watch attentively; "The government keeps tabs on the dissidents" guard - to keep watch over; "there would be men guarding the horses" invigilate, proctor - watch over (students taking an exam, to prevent cheating)