noun, masculine/kuˈɲado/plural: cuñados
brother-in-law; know-all, (US, Canada) blowhard
Synonyms: sabelotodo, sabiondo, todólogo
Inherited from Old Spanish [Term?], from Latin cognātus. Doublet of the semi-learned borrowing cognado. The "know-all" sense alludes to the stereotypical behavior of brothers-in-law at Christmas celebrations, weddings and family gatherings.