From Wiktionary, the free dictionary
From Proto-Indo-Iranian *čatwā́ras , from Proto-Indo-European *kʷetwóres .
*čaθwā́rah m pl (feminine plural *čátasrah , neuter plural *čaθwā́r )[ 1]
four
Central Iranian:
Northeastern Iranian:
Proto-Scythian: *čaθβāri Proto-Saka-Wakhi: *caθβāri Proto-Saka: *cahari Old Khotanese: 𑀢𑁆𑀘𑀳𑁅𑀭 ( tcahaura ) Tumshuqese: 𑀢𑁆𑀲𑀳𑀭𑀺 ( tsahari ) Wakhi: cəbыr Proto-Sarmatian: *čəθβār Alanic: *čuββar Ossetian:Digor Ossetian: цуппар ( cuppar ) Iron Ossetian: цыппар ( cyppar )
Sogdo-Bactrian:
Bactrian: σοφαρο ( sofaro )
Khwarezmian: [script needed] ( cfʾr )
Proto-Sogdic:
Sogdian: [script needed] ( čatfār )
Yaghnobi: тафор ( tafor )
Southeastern Iranian:
Ormuri-Parachi:
Ormuri: ښری ( ṣ̌rī )
Parachi: čōr
Pashto: څلور ( śalór )
Shughni: cavōr
Northwestern Iranian:
Baluchi: چار ( cár )
Kurdish:
Northern Kurdish: çar
Central Kurdish: چوار ( çwar ) , چار ( çar )
Proto-Medo-Parthian:
Parthian:
Manichaean script: 𐫝𐫜𐫀𐫡 ( cfʾr /čafār/ )
Zazaki: chehar
Southwestern Iranian:
Middle Persian: ( /čahār/ )
Book Pahlavi script: [Book Pahlavi needed] ( ALBA ) , [Book Pahlavi needed] ( chʾl )
Inscriptional Pahlavi script: 𐭰𐭤𐭥 ( chʿ )
Manichaean Middle Persian: 𐫝𐫍𐫀𐫡 ( chʾr ) , 𐫝𐫍𐫀𐫀𐫡 ( chʾʾr )
Classical Persian: چهار ( čahār )
Dari: چهار ( čahār )
Iranian Persian: چهار ( čahâr )
Tajik: чор ( čor ) , чаҳор ( čahor )
^ Cheung, Johnny (2011 ), Selected Pashto Problems II. Historical Phonology 1: On Vocalism and Etyma (Iran and the Caucasus)[1] , volume 15 , numbers 1-2 , Brill Academic Publishers, page 177 : “*čaθwā́ra- ”