Words for to change, to arrange, to repent and related things in Celtic languages.
Words marked with a * are reconstructions.
| Proto-Celtic | *reketi = to arrange |
|---|---|
| Old Irish (Goídelc) | ad·eirrig, ad·errig = to change, emend, repeat |
| Middle Irish (Gaoidhealg) | ad-eirrig, aitherrach, aithirge = to repeat, reiterate, change aithrigid, aithrígad = to change, alter, move, repent |
| Irish (Gaeilge) | athraigh [ˈaːhəɾˠɪɟ / ˈaːhɾˠi] = to change, alter, move, reduce athráite = reiterated athráiteach = reiterative, talebearing athraitheach = changeable, moveable, variant aithraitheoir = mover |
| Scottish Gaelic (Gàidhlig) | attarradh [ahər̪ˠəɣ] = change, alteration, changing, varying, amendment, variation attarrach [ahər̪ˠəx] = stranger, alien, alteration, change attarraich [ahər̪ʲɪç] = alter, change, modify, vary, convert, amend, modulate, fluctuate, transpose attarrachadh [ahər̪ˠəxəɣ] = altering, changing, modifying, varying, alteration, change, amendment, fluctuation |
| Manx (Gaelg) | arraghey = to change, digress, dislodge, adjorn; motion, move, removal, displacement arraghys = variety, manoeuvre, variation of wind |
| Middle Welsh (Kymraec) | atrec, attrec = repentance, grief, a turning back, recovery, delay, delaying, respite at(t)regỽch, attreguch, attregwch = grief, repentance, adversity |
| Welsh (Cymraeg) | atreg = repentance, grief, a turning back, recovery, delay, delaying, respite atregwch = grief, repentance, adversity, delay, respite, prolonging |
| Middle Cornish (Cernewec / Kernuak) | edrec, eddrek, edrek = repentance, grief, sorrow |
| Cornish (Kernewek) | edrega = to regret edregus = regretful, repentant edrek = regret edrygys = regretted, sorry |
| Middle Breton (Brezonec) | azrec = compunction, contrition, repentance azrecat = to repent |
| Breton (Brezhoneg) | azrek = compunction, contrition, repentance azrekaat = to repent |
Etymology: from Proto-Indo-European *(H)rek- (to arrange, to set in order) [source]. Words from the same roots possibly include říct [ˈr̝iːt͡st] (to say) in Czech, река [rɛˈkɤ] (to say, tell, decide, think) in Bulgarian, речь [rʲet͡ɕ] (speech, language, talk, word) in Russian, and rhegi [ˈr̥ɛɡi] (to curse, swear) in Welsh [source].
Sources: Wiktionary, Etymological Dictionary Of Proto Celtic, In Dúil Bélrai English – Old Irish glossary, eDIL – Electronic Dictionary of the Irish Language, Teanglann.ie, Am Faclair Beag, An etymological dictionary of the Gaelic language, Fockleyreen: Manx – English Dictionary, Online Manx Dictionary, Gaelg Corpus, Geiriadur Prifysgol Cymru, Lexicon cornu-britannicum : a dictionary of the ancient Celtic language of Cornwall, Gerlyver Kernewek, Devri : Le dictionaire diachronique du breton, Geriafurch, TermOfis

