| 1 | Latin | igneus | fiery, hot, on fire, burning; ardent, fervid,... |
| 2 | Latin | -eus | argentum + API → argenteus; ferrum + API →... |
| 3 | Ancient Greek | -εῖος | Forms adjectives, usually with a meaning of "of"... |
| 4 | Proto-Indo-European | -iHwós | — |
| 5 | Proto-Indo-European | -wós | Creates adjectives from verb stems |