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Synonyms

mother tongue

American  
[muhth-er tuhng, muhth-er tuhng] / ˈmʌð ər ˈtʌŋ, ˈmʌð ər ˌtʌŋ /

noun

mother tongues plural
  1. the language first learned by a person; native language.

  2. mother language.


mother tongue British  

noun

  1. the language first learned by a child

  2. a language from which another has evolved

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of mother tongue

1350–1400; Middle English moder tonge

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

He dropped his English name, James, and resolved to write only in the language of the Kikuyu people, his mother tongue.

From The Wall Street Journal Dec. 23, 2025

It just created this real, almost, like, subconscious intimacy because it’s the mother tongue.

From Los Angeles Times Dec. 18, 2025

As the young children enthusiastically sang out phrases, Esau interjected occasionally to correct their pronunciation of the distinct sounds and deep clicks of her mother tongue, of which she is the last first-language speaker.

From Barron's Oct. 10, 2025

"Iranians were here. They all fled," one of them says, speaking in his mother tongue, a dialect of Turkish.

From BBC Feb. 15, 2025

Finally, he must have thought, after all these decades, his mother tongue, Afrikaans, was on its way to supplanting English as the language of the land.

From "Kaffir Boy: An Autobiography" by Mark Mathabane

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