The Proto-Indo-European word *h₁oinos
Word *h₁oinos
Meaning one
Synonyms *sem-

Comments
Alb. një/nji, Lith. vienas, Ltv. viens, Gaul. oinos, Gm. ein/eins, Eng. ān/one, Gk. oios, Av. aēuua, Ir. óin/aon, Kashmiri akh, Kamviri ev, Oscan uinus, ON einn, Old Prussian aīns, Osset. iu/ieu, Pers. aiva/yek, OCS edinŭ, Polish jeden, Russ. odin, Skr. eka, Lat. ūnus, Umbrian uns, Goth. ains, Welsh un

Other words that might be of interest
*hₓok̂tṓ(u) ‘eight’, *trei- ‘three’, *dwoi- ‘group of two, two’, *kʷetwóres (m), kʷetwesóres (f), kʷetwōr (n) ‘four’, *(h₁)néwn̥ ‘nine’, *pénkʷe ‘five’, *septḿ̥ ‘seven’, *septm̥-k̂ómt-h₂ ‘seventy’, *kswek̂s ‘six’, *tréies (m), trisóres (f), treih₂ (n) tri- [prefix] ‘three’, *dwéh₃(u) ‘two’, *h₁newh₁m̥(h₁néwh₁n̥?) ‘nine’, *tréyes ‘three’, *trī-k̂omt(hₐ) ‘thirty’, *kswek̂s-k̂omt(hₐ) ‘sixty’, *kʷetwóres ‘four’, *per(hₓ)- ‘first’, *dwiyos~dwitos ‘second’, *h₁newh₁m̥m/n̥-mos ‘ninth’, *hₓok̂towós ‘eighth’, *kswek̂sos ‘sixth’, *kʷturyós~kʷetwortos ‘fourth’, *pn̥kʷtós ‘fifth’, *septm̥-mós ‘seventh’, *triyós ‘third’