The only free and comprehensive online etymological dictionary of the Spanish language
parar (1) (Verb) "to stop;" "to place a bet"
10th cent. Originally meaning "to situate." From Latin parare "to prepare." The sense evolution was from positioning an object to keeping the object still. From Proto-Italic *parā-je/o- "to prepare." A derivation of Proto-Indo-European *perh3- "to provide" (see also parir).
Indo-European
Romance
Portuguese parar, French parer, Italian parare
Celtic
Gaulish ieuru "he offered," Old Irish ernaid "to grant"
Hellenic
Ancient Greek ἔπορον (époron) "provided"
Indo-Iranian
Sanskrit pr̥ṇā́ti "he gives"