The only free and comprehensive online etymological dictionary of the Spanish language
vestir (Verb) "to dress"
11th cent. From Latin vestire 'id.' From vestis "garment." From Proto-Italic *wes-ti- 'id.' From Proto-Indo-European *u̯es-ti̯- 'id.' From a root *u̯es- "to clothe."
Indo-European
Romance
Asturian vestir, Portuguese vestir, Galician vestir, Catalan vestir, French vêtir, Italian vestire, Sardinian bestire
Germanic
Gothic wasjan "to dress," Old High German werian 'id.,' Old English werian 'id.' (English to wear)
Albanian
Albanian vesh "to clothe"
Hellenic
Ancient Greek εἵματα (eímata) "clothes"
Armenian
Armenian z-genowm "to clothe oneself"
Indo-Iranian
Sanskrit váste "to wear," Old Avestan vastra- "garment"
Tocharian
A wäs- "to wear," B wäs- 'id.'