watch one's language/mouth/tongue

idiom

: to not say rude or inappropriate things
Watch your language, young lady!

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watch one's language
watch one's language/mouth/tongue
watch one's mouth
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“Watch one's language/mouth/tongue.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watch%20one%27s%20language%2Fmouth%2Ftongue. Accessed 31 Oct. 2025.

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