keep one's head
Stay calm, retain self-control, as in When the rowboat capsized, George yelled that everyone should keep their head and hold onto the boat. This usage dates from the early 1600s and is about two centuries older than the antonym, lose one's head, meaning “to become confused and agitated,” as in Whenever the stock market goes down sharply, people seem to lose their heads and sell.
keep one's head above water. See head above water.
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How to use keep one's head in a sentence
Added to drinking water at concentrations of around one part per million, fluoride ions stick to dental plaque.
In his view, a writer has only one duty: to be present in his books.
Yet this, in the end, is a book from which one emerges sad, gloomy, disenchanted, at least if we agree to take it seriously.
The fear of violence should not determine what one does or does not say.
The al Qaeda-linked gunmen shot back, but only managed to injure one officer before they were taken out.
Practise gliding in the form of inflection, or slide, from one extreme of pitch to another.Expressive Voice Culture|Jessie Eldridge Southwick
He alludes to it as one of their evil customs and used by them to produce insensibility.
Madame Ratignolle, more careful of her complexion, had twined a gauze veil about her head.The Awakening and Selected Short Stories|Kate Chopin
There was a rumor that Alessandro and his father had both died; but no one knew anything certainly.Ramona|Helen Hunt Jackson
Truth is a torch, but one of enormous size; so that we slink past it in rather a blinking fashion for fear it should burn us.Pearls of Thought|Maturin M. Ballou