tyngu'r du yn wyn

Welsh

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Alternative forms

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Pronunciation

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Idiom

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tyngu'r du yn wyn

  1. (idiomatic) to swear black is white, to insist that something false is true.

References

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  • R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “tyngu”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies