to lose one's tongue
- idiom
- He seems to have lost his tongue.
Examples
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He was so surprised by the unexpected news that he lost his tongue for a moment.
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Apparently, you lost your tongue along with your truck.
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Have you lost your tongue?
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Have you lost your tongue?
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What's the matter, you lost your tongue?
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When she saw the big crowd of people, she completely lost her tongue and couldn't speak.
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After her embarrassing mistake, she lost her tongue and didn't know what to say.
Synonyms
To stop speaking because you feel nervous, embarrassed, or upset
How Speechless
Surface Forms
Morphology
The meaning 'to become unable to speak' is directly inferable from combining 'lose' (to be without) with 'tongue' (the organ of speech); the phrase transparently maps loss of the speech organ to loss of ability to speak. Similar constructions exist cross-linguistically (e.g. expressions meaning 'become speechless'), so a B1 learner who knows the constituent words is likely to understand this sense.
Etymology
Lose one's tongue may come from the strong image of the tongue being lost or frozen so a person cannot speak. So the phrase means 'to become suddenly unable to speak', often because you are nervous, shocked, or surprised.