Welsh

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Etymology

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chwarren (gland) +‎ clwyf (sickness).

Pronunciation

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Noun

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chwarenglwyf f (uncountable, not mutable)

  1. glandular fever, mononucleosis
    Synonym: twymyn y chwarennau

Further reading

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