The only free and comprehensive online etymological dictionary of the Spanish language
junto (Adjective) "joined"
15th cent. From Latin iunctus 'id.,' from iungere "to join." From Proto-Italic *jung-e/o- 'id.' From Proto-Indo-European *i̯u̯-n-e-g- 'id.' A thematic verb (originally *i̯u̯-n-g-) derived from the root *i̯eu̯g- "to join," "to yolk" (see yugo) and the mysterious nasal-infix *-n- of unknown origin that formed the present tense in athematic verbs.
Indo-European
Romance
Asturian xuntu, Portuguese junto, Galician xunto, Catalan junt, French joint, Italian giunto