dotuit

• IPA^(key): /doˈtutʲ/

From to- +‎ Proto-Celtic *tudeti, from Proto-Indo-European *(s)tewd- (“to push, hit”); cognate with Sanskrit तुदति (tudáti), Latin tundō, Gothic 𐍃𐍄𐌰𐌿𐍄𐌰𐌽 (stautan).^[1] The final consonant originated in the prototonic ·tuit /ˈtutʲ/ from */ˈtoθuðʲθʲ/, syncopated from *to-tudeti, and later spread to the deuterotonic. The /u/ vowel, on the other hand, originated in the deuterotonic and later spread to the prototonic, as the original prototonic form */ˈtoθuðθʲ/ would normally have become *·túait */ˈtuːa̯tʲ/.^[2]

The preterite do·cer, with exceptional non-palatalized /r/ in the 3rd person singular, is from to- + Proto-Celtic *kerat (“to fall”), from the root aorist of Proto-Indo-European *ḱerh₂- (“to break”); cognate with Sanskrit शृणाति (śṛṇā́ti, “to crush”) and Ancient Greek κεραΐζω (keraḯzō, “to ravage, plunder”).^[3][4]

do·tuit (prototonic ·tuit, verbal noun tothaimm)

1. to fall (move to a lower position under the effect of gravity; come down or descend)

• c. 800, Würzburg Glosses on the Pauline Epistles, published in Thesaurus Palaeohibernicus (reprinted 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. I, pp. 499–712, Wb. 4^d15

  In Belzefuth: is béss didu ind lïacc benir il-béim friss, et intí do·thuit foir ɔ·boing a chnámi, intí fora tuit-som immurgu at·bail-side.

  The Beelzebub: it is the custom, then, of the stone that many blows are hit against it, and he who falls upon it breaks his bones; however, he whom it falls on perishes

• c. 800, Würzburg Glosses on the Pauline Epistles, published in Thesaurus Palaeohibernicus (reprinted 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. I, pp. 499–712, Wb. 5^b11

  Cair in sí a méit fris·comartatar co ndo⟨d⟩sitis huili a fide Christi? Non; do nertad Iude trá inso lessom.

  Have they offended so greatly that all should fall from the faith of Christ? No; he considers this, then, for the exhortation of the Jews.

• con·tuit

• Middle Irish: do·fuit, ·tuit
  • Irish: tuit, tit
  • Manx: tuitt
  • Scottish Gaelic: tuit

• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “1 do·tuit”, in eDIL: Electronic Dictionary of the Irish Language
• Pedersen, Holger (1913) Vergleichende Grammatik der keltischen Sprachen [Comparative Grammar of the Celtic Languages] (in German), volume II, Göttingen: Vandenhoeck und Ruprecht, →ISBN, page 656

From dí- +‎ Proto-Celtic *tudeti, as above.

do·tuit (prototonic ·díthat, verbal noun díthim)

1. to lapse
2. to become forfeit

• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “2 do·tuit”, in eDIL: Electronic Dictionary of the Irish Language
• Pedersen, Holger (1913) Vergleichende Grammatik der keltischen Sprachen [Comparative Grammar of the Celtic Languages] (in German), volume II, Göttingen: Vandenhoeck und Ruprecht, →ISBN, page 657