Perhaps from the same root as lled (“part, partially”) and lled- (“part, partially”) or possibly lled (“challenge to a witness”). Cognate with Cornish les-.
llys-
Llys- triggers the soft mutation on the following noun. Its original negative meaning of "false", "spurious" has been superseded by its more common meaning nowadays of "step-", which does not necessarily have any negative connotations.
Welsh mutation | |||
---|---|---|---|
radical | soft | nasal | aspirate |
llys- | lys- | unchanged | unchanged |
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs. |
R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “llys-”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies