Proto-IE: *ey-
Meaning: to go
Hittite: i- (in Imp.), pa-i- 'gehen' (Tischler 335, Friedrich 154-155)
Tokharian: A, B i- (PT *i-) 'go, travel' (Adams 60)
Old Indian: éti (imp. ihí, 1 pl. imáḥ) `to go, walk'
Avestan: aēiti `gehen'
Other Iranian: OPers aitiy `gehen'
Old Greek: êi̯mi, ímen `werde(n) gehen', inf. iénai̯ `gehen'; pl. íthmata n. `Schritte, Tritte; Füsse'
Latin: eō, iī, itum, īre `gehen'; itus, -ūm m. `Gang'; ped-es, com-es
Other Italic: Osk eítuns (set) `? itūrī sunt'; Paelign eite `īte'; Umbr etu `ītō', etu-tu `euntō', eest, est `ibit', iust `ierit', ier `itum sit', etaians `itent', etatu `itātōte'
Celtic: OIr ethae `itum est', ethaim `gehe'
Russ. meaning: идти
References: WP I 102 f
Comments: See also *it-er/-en- <PIH *i-> 'way' #2719
