treiddiol

Welsh

Etymology

From treiddio (“to penetrate”) +‎ -ol

Adjective

treiddiol (feminine singular treiddiol, plural treiddiol, equative mor dreiddiol, comparative mwy treiddiol, superlative mwyaf treiddiol)

1. penetrating

   Synonym: treiddgar

2. (figurative) shrewd, astute

   Synonyms: craff, miniog

Derived terms

• hydreiddiol (“pervading”)
• treiddioldeb (“penetration”)
• treiddiolrwydd (“penetration; astuteness”)

Mutation

Mutated forms of treiddiol

radical	soft	nasal	aspirate
treiddiol	dreiddiol	nhreiddiol	threiddiol

Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.

Further reading

• D. G. Lewis, N. Lewis, editors (2005–present), “treiddiol”, in Gweiadur: the Welsh-English Dictionary, Gwerin
• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “treiddiol”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies