Etymology

From Proto-Iranian (compare Kurdish چوار ‎(çwar, çiwar), Ossetian цыппар ‎(cyppar), Avestan čaθwar), from Proto-Indo-Iranian (compare Sanskrit चतुर् ‎(catur)), ultimately from Proto-Indo-European *kʷetwóres (compare Armenian չորս ‎(čʿors), Lithuanian keturi, Latin quattuor, English four).

Pronunciation

• (Iranian Persian) IPA^(key): [tʃæˈhɒːɾ]
• (Tehrani) IPA^(key): [tʃɒˈhɒːɾ]