- Mae hynny'n newyddion da.
- That is good news.
This is used when no specific noun is referred to. When a specific noun is referenced, the appropriate gendered word for "that" is used, namely hwnnw for masculine nouns and honno for feminine nouns in more formal language, or masculine hwnna and feminine honna in more informal language.
- am hynny (“therefore, for that reason”)
- ar ben hynny (“furthermore, moreover”)
- ar hynny (“thereupon, consequently”)
- ar ôl hynny (“after that, after then”)
- at hynny (“besides that”)
- cymaint â hynny (“as much as that, all that”)
- cyn hynny (“before that, before then”)
- cyn belled â hynny (“so far”)
- fel hynny (“like that”)
- gan hynny (“therefore, in as much as”)
- gyda hynny (“at that”)
- er hynny (“nevertheless, however”)
- heblaw hynny (“besides, moreover”)
- hynny yw (“that is, i.e.”)
- megis hynny (“in the same way, in that manner”)
- o achos hynny (“therefore, for that reason”)
- o hynny allan (“from then on, thenceforward”)
- o ran hynny (“for that matter, as far as that is concerned, on that account”)
- pam hynny (“why is that, why so”)
- wedi hynny (“after that, afterwards”)
- wedi 'ny (“after that, afterwards”)
Follows the noun, which is preceded by the definite article.
- pryd hynny (“at that time, then”)
- y rhai hynny (“those ones, those”)
- y rheini (“those ones, those”)
- y rheiny (“those ones, those”)
- R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950-), “hynny”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies