a deshora

Galician

From Old Galician-Portuguese adesora (13th century, Cantigas de Santa Maria), contraction of a de so hora (“at the very moment”). The semantic evolution, which also happened in Portuguese and Spanish, was due to rebracketing: des- (“dis-”) + hora (“hour”).^[1]

Ernesto Xosé González Seoane, María Álvarez de la Granja, Ana Isabel Boullón Agrelo (2006–2022) “adesora”, in Dicionario de Dicionarios do galego medieval (in Galician), Santiago de Compostela: Instituto da Lingua Galega
Xavier Varela Barreiro, Xavier Gómez Guinovart (2006–2018) “desora”, in Corpus Xelmírez - Corpus lingüístico da Galicia medieval (in Galician), Santiago de Compostela: ILG
Antón Luís Santamarina Fernández, editor (2006–2013), “deshora”, 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), “a deshora”, in Tesouro informatizado da lingua galega (in Galician), Santiago de Compostela: Instituto da Lingua Galega
Rosario Álvarez Blanco, editor (2014–2024), “a deshora”, in Tesouro do léxico patrimonial galego e portugués (in Galician), Santiago de Compostela: Instituto da Lingua Galega, →ISSN

^ Joan Coromines, José A[ntonio] Pascual (1983–1991) “hora”, in Diccionario crítico etimológico castellano e hispánico [Critic Castilian and Hispanic Etymological Dictionary] (in Spanish), Madrid: Gredos

From a +‎ deshora.