| Idiom | Meaning | Example | 
| keep your head above water | 
survive, have just enough to live, get by
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With a part-time job, I was able to keep my head above water.
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| keep your nose clean | 
stay out of trouble, toe the line
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Keep your nose clean, and you'll get out of prison sooner.
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| keep your nose to the grindstone | 
continue to work hard
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Keep your nose to the grindstone and you'll pass the final exam.
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| keep your shirt on | 
be calm, do not rush me, do not get your shirt in a knot
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When we asked Dad to hurry, he'd say, "Keep your shirt on."
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| keep your word | 
do as you promise, keep a promise
 | 
You can depend on him. He always keeps his word.
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| keeper | 
(See a keeper)
 | 
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| keester | 
buttocks, backside, bum, rear end
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We laughed when Lan fell off the horse and landed on her keester.
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| kept woman | 
(See a kept woman)
 | 
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| kettle of fish | 
(See a different kettle of fish)
 | 
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| kick | 
running faster at the end of a race, home stretch
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If you are a distance runner, you know the meaning of kick.
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