de seu

Attested since 1370: de (“of”) and seu (“his/her/its”).

• IPA^(key): [deˈsew]

de seu

1. on one's own; by oneself
   • 1876, O Tío Marcos, I, 11:

     Din alí que o conto é darlle comenzo a unha cousa, que dempois camiña de seu;

     They say that the gist is beginning something, because later it will go by itself;

2. having whole ownership

   O mozo xa ten coche de seu ― The young man already owns a car (by himself, alone)

• Antón Luís Santamarina Fernández, editor (2006–2013), “de seu”, in Dicionario de Dicionarios da lingua galega [Dictionary of Dictionaries of the Galician language] (in Galician), Santiago de Compostela: Instituto da Lingua Galega
• Antón Luís Santamarina Fernández, Ernesto Xosé González Seoane, María Álvarez de la Granja, editors (2003–2018), “de seu”, in Tesouro informatizado da lingua galega (in Galician), Santiago de Compostela: Instituto da Lingua Galega
• Rosario Álvarez Blanco, editor (2014–2024), “de seu”, in Tesouro do léxico patrimonial galego e portugués (in Galician), Santiago de Compostela: Instituto da Lingua Galega, →ISSN

de seu

1. (Old Galician) on one's own; by oneself
   • 1370, R. Lorenzo, editor, Crónica troiana. Introducción e texto, A Coruña: Fundación Barrié, page 735:

     Et sabede que nõ ouuerõ mester ayos, ca todo(s) aprendíã moy bẽ de seu, quanto lles cõvĩjna.

     And you must know that they didn't need tutors, because all of them learned very well by themselves everything that suited them

• Galician: de seu

• Xavier Varela Barreiro, Xavier Gómez Guinovart (2006–2018) “de seu”, in Corpus Xelmírez - Corpus lingüístico da Galicia medieval (in Galician), Santiago de Compostela: Instituto da Lingua Galega