3.3.1.1 -t Fire, shining; feu, brillant |
| Drav. | ti | (Tamil id.) fire |
| Sumer. | ti | day |
| Etr. | itus | day |
| Akk. | itu | (Sumer. id.) moon |
| Lat. | idus | (borrowing) lunation |
| Berb. | ithri | star |
| Pers. | èteS | fire |
| Pers. | AteSgagh | a god ( Greek Pyrrhos) |
| Talysh | otoS | fire, otöSa colour of fire |
| Kurdish | teiSin | to burn |
| Germ.(OHG) | eit | fire |
| Gael.S. | te | hot |
| Cymric | tes | heat |
| Romance | été, està, estio | season of heat |
| Alb. | ethë | fever |
| Anc.Greek | eithos | fire; aitho to light up |
| Etr. | Aith | god of hell |
| Gael.I | athas | joy |
| Anc.Greek | aithein | to shine |
| Phoen. | attunà | oven |
| Anc.Greek | Aitnè | the Etna |
| Anc.Greek | aitnaios | a kind of fish |
| Anc.Greek | aetitès | a stone "found eagles' nests" by folk etym. (convergence ðaetos) |
| Anc.Greek | aithra | clear sky |
| Anc.Greek | aithir, aèr | air |
| Roman. | aer | air |
| Ital.: Sard. | aera | azure |
| Skr. | ayara | day |
| Goth. | air | early |
| Icel.(a.litt.) | ár | early |