The Proto-Indo-European word *h₁es-
Word *h₁es-
Meaning to be
See also Avestan: ah- ‘to be’
Proto-Indo-European: *h₁ēs- ‘to sit’
Proto-Indo-European: *h₁w(e)su- ‘good’
Proto-Indo-European: *h₁sónt- ‘real, true’
Proto-Indo-European: *su- ‘good’
Hittite: e-eš-mi ‘i am’
Lycian: es- ‘to be’
Palaic: aš- ‘to be’
Synonyms *bʰeu(hₓ)-

Comments
OCS jestĭ, Russ. est', Lith. esmi, Ltv. esmu, Old Prussian asmai, Gk. esti, Ir. am/, Skr. asti, Av. asti, Lat. est, Umbrian sent, Oscan súm, Eng. is/is, Arm. ē, Polish jest, Alb. është/âsht, Gm. ist/ist, Goth. ist, ON es, Hitt. asa, Lyc. es, Luw. as, Lyd. e-, Palaic aš-, Toch. ṣ e/ṣ ei, Pers. astiy/ast,