keep a civil tongue in one's head
Speak politely, as in The teacher won't allow swearing; she says we must keep a civil tongue in our heads. This expression uses tongue in the sense of “a manner of speaking,” a usage dating from the 1400s. An early cautionary version was “Keep a good tongue in your head, lest it hurt your teeth” (1595).
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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.
They are, to say the least, preparing for civil war (the polling stations are stormed by armed gangs).
But what is there more irresponsible than playing with the fire of an imagined civil war in the France of today?
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
“Perhaps you do not speak my language,” she said in Urdu, the tongue most frequently heard in Upper India.The Red Year|Louis Tracy