di-Lydaweg

Welsh

di- (“-less”) +‎ Llydaweg (“Breton (language)”)

di-Lydaweg (feminine singular di-Lydaweg, plural di-Lydaweg, not comparable)

non-Breton-speaking
- 2019, Aneirin Karadog, Byw Iaith: Taith i Fyd y Llydaweg, Carreg Gwalch, page 8:
  A bwrw iddi mae hoelion wyth y Llydaweg heddiw, gan gynnig arweiniad, yn eu tro, i do iau ysgolion cyfrwng Llydaweg Diwan, i'r trwch o rieini di-Lydaweg sy'n danfon eu plant i'r ysgolion hynny, i'r 3,000 o oedolion sy'n dysgu Llydaweg gyda'r nos yn wythnosol bob blwyddyn, a hefyd i'r to hŷn, a ddechreuodd amau 'beth yw'r pwynt?', i weld fod eu hiaith yn dawnsio'n hardd mewn gwisg newydd sbon.
  And getting down to business is what the Breton big guns are doing today, offering guidance, in their turn, to the younger generation in Diwan Breton medium schools, to the large number of non-Breton-speaking parents who send their children to those schools, to the 3,000 adults who are learning Breton weekly in the evening every year, and also to the older generation, who began to doubt 'what's the point?', to see their language dancing beautifully in a brand new dress.
not in Breton

Welsh mutation
radical	soft	nasal	aspirate
di-Lydaweg	ddi-Lydaweg	ni-Lydaweg	unchanged
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.