70+ Most Common & Useful List of Idioms Starting with K

Idioms Starting with K | An idiom is a phrase or expression that typically presents a figurative, non-literal meaning attached to the phrase. Some phrases which become figurative idioms, however, do retain the phrase’s literal meaning. Categorized as formulaic language, an idiom’s figurative meaning is different from the literal meaning.

Here are the list some of the Idioms starting with K:

idioms starting with k
idioms starting with k

Idioms Starting with K

Sr. No.IdiomMeaning
1Kangaroo courtWhen people take the law into their own hands and form courts that are not legal, these are known as kangaroo court.
2Keen as mustardIf someone is very enthusiastic, they are as keen as mustard.
3Keep abreastIf you keep abreast of things, you stay informed about developments.
4Keep at bayIf you keep someone or something at bay, you maintain a safe distance from them.
5Keep body and soul togetherIf you earn enough to cover your basic expenses, but nothing more than that, you earn enough to keep body and soul together.
6Keep in touchIf you keep in touch with someone, you keep communicating with them even though you may live far apart.
7Keep it on the Q TIf you keep something on the Q T, you keep it quiet or secret.(‘Q-T’ is also used.)
8Keep it under your hatIf you keep something under your hat, you keep it secret.
9Keep mumIf you keep mum about something, you keep quiet and don’t tell anyone.
10Keep postedIf you keep posted about something, you keep up-to-date with information and developments.
11Keep someone at arm’s lengthIf you keep someone or something at arm’s length, you keep a safe distance away from them.
12Keep someone on their toesIf you keep someone on their toes, you make sure that they concentrate on what they are supposed to do.
13Keep the wolf at bayIf you keep the wolf at bay, you make enough money to avoid going hungry or falling heavily into debt.
14Keep up with the JonesesPeople who try to keep up with the Joneses are competitive about material possessions and always try to have the latest and best things.
15Keep your chin upThis expression is used to tell someone to have confidence.
16Keep your coolIf you keep your cool, you don’t get excessively excited or disturbed in a bad situation.
17Keep your ear to the groundIf you keep your ear to the ground, you try to keep informed about something, especially if there are rumors or uncertainties.
18Keep your eye on the ballIf you keep your eye on the ball, you stay alert and pay close attention to what is happening.
19Keep your eye on the prizeThis means that you should keep your focus on achieving a positive end result.
20Keep your eyes peeledIf you keep your eyes peeled, you stay alert or watchful.

21Keep your fingers crossedIf you are keeping your fingers crossed, you are hoping for a positive outcome.
22Keep your hair onKeep your hair on is advice telling someone to keep calm and not to over-react or get angry.
23Keep your headIf you keep your head, you stay calm in times of difficulty.
24Keep your head above waterIf you are just managing to survive financially, you are keeping your head above water.
25Keep your nose cleanIf someone is trying to keep their Nose Clean, they are trying to stay out of trouble by not getting involved in any sort of wrong-doing.
26Keep your nose to the grindstoneIf you keep your nose to the grindstone, you work hard and seriously.
27Keep your options openIf someone’s keeping their options open, they aren’t going to restrict themselves or rule out any possible course of action.
28Keep your pecker upIf someone tells you to keep your pecker up, they are telling you not to let your problems get on top of you and to try to be optimistic.
29Keep your powder dryIf you keep your powder dry, you act cautiously so as not to damage your chances.
30Keep your shirt on!This idiom is used to tell someone to calm down.
31Keep your wig on!This idiom is used to tell someone to calm down.
32Kettle of fishA pretty or fine kettle of fish is a difficult problem or situation.
33Kick a habitIf you kick a habit, you stop doing it.
34Kick away the ladderIf someone kicks away the ladder, they remove something that was supporting or helping someone.
35Kick in the teethBad news or a sudden disappointment are a kick in the teeth.
36Kick something into the long grassIf an issue or problem is kicked into the long grass, it is pushed aside and hidden in the hope that it will be forgotten or ignored.
37Kick the ballisticsIt means you realize the intensity of a situation. For example, there is too much unemployment now, so the prime minister must kick the ballistics and change his policy.
38Kick the bucketWhen someone kicks the bucket, they die.
39Kick up your heelsIf you kick up your heels, you go to parties or celebrate something.
40Kick your heelsIf you have to kick your heels, you are forced to wait for the result or outcome of something.

41Kicked to touchTouch is a zone of the playing field in Rugby. Kicked to touch means the ball was put safely out of play. Idiomatic usage usually means a person has deftly avoided an issue in argument.
42Kid glovesIf someone is handled with kid gloves, they are given special treatment and handled with great care.
43Kill the goose that lays the golden eggIf you kill the goose that lays the golden egg, you ruin something that is very profitable.
44Kill two birds with one stoneWhen you kill two birds with one stone, you resolve two difficulties or matters with a single action.
45Kindred spiritA kindred spirit is someone who feels and thinks the way you do.
46King of the castleThe king of the castle is the person who is in charge of something or in a very comfortable position compared to their companions.
47King’s ransomIf something costs or is worth a king’s ransom, it costs or is worth a lot of money.
48Kiss and tellIf people kiss and tell, they disclose private or confidential information.
49Kiss of deathThe kiss of death is an action that means failure or ruin for someone, a scheme, a plan, etc.
50Kiss something goodbyeIf someone tells you that you can kiss something goodbye, you have no chance of getting or having it.
51Kissing cousinA kissing cousin is someone you are related to, but not closely.
52Kitchen-sinkKitchen-sink drama deals with ordinary people’s lives.
53Kith and kinYour kith and kin are your family; your next of kin are close relations you nominate to deal with your affairs in the event of your death on a document, like a passport.
54Knee-jerk reactionA knee-jerk reaction is an instant, instinctive response to a situation.
55Knickers in a twistWhen your knickers are in a twist, you are angry and snappish over something trivial. ‘Whenever he loses his car keys, he gets his knickers in a twist.’
56Knight in shining armorA knight in shining amour is someone who saves you when you are in great trouble or danger.
57Knit your browsIf you knit your brows, you frown or look worried.
58Knock ’em dead‘Knock ’em dead’ is used as a way of wishing someone luck before they give a performance or have to appear before people, as in an interview, etc. (’em = them)
59Knock on woodThis idiom is used to wish for good luck. (‘Touch wood’ is also used.)
60Knock something on the headIf you knock something on the head, you stop it or stop doing it.

61Knock the pins from under someoneIf someone knocks the pins from under you, they let you down.
62Knock your block offTo punch someone in the face Eg : The next time you do something like that I’m going to “knock your block off”.
63Knock your socks offIf something knocks your socks off, it amazes and surprises you, usually in a positive way.
64Know a hawk from a handsawIf someone knows a hawk from a handsaw, they are able to distinguish things and assess them.
65Know full wellWhen you know full well, you are absolutely sure that you know.
66Know the ropesSomeone who is experienced and knows how the system works know the ropes.
67Know where all the bodies are buriedSomeone who by virtue of holding a position of trust with an organization for a long period of time has come to know many of the secrets that others in more powerful positions would rather be kept secret knows where the bodies are buried. An implication is that the person knowing these secrets will use that knowledge to secure something of value for him- or herself.
68Know which side one’s bread is buttered onIf you know which side one’s bread is buttered on, you know where your interests lie and will act accordingly to protect or further them.
69Know which way the wind blowsThis means that you should know how things are developing and be prepared for the future.
70Know your onionsIf someone is very well-informed about something, they know their onions.
71Know your placeA person who knows their place doesn’t try to impose themselves on others.

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