The only free and comprehensive online etymological dictionary of the Spanish language
quitar (Verb) "to remove"
12th cent. From Vulgar Latin *quietare "to release," "to calm." From Latin quies "rest." From Proto-Italic *kwiē-ti- 'id.' From Proto-Indo-European *kweh1-ti̯- 'id.' From the root *kwi̯eh1- "to rest."
Indo-European
Germanic
Old Church Slavonic počiti "to rest," Russian počít' 'id.,' Polish pokój "peace," Slovene počíti "to rest"
Armenian
Armenian hang "rest," hang-e-aw "to be rested"
Indo-Iranian
Avestan š́iiā̆- "to be calm," šāiti- "happiness"