| 1 | Old French | solas | joy; pleasure; enjoyment |
| 2 | Latin | sōlācium | — |
| 3 | Latin | solor | I comfort, console, solace; I soothe, ease,... |
| 4 | Latin | -āx | — |
| 5 | Latin | -ium | Suffix used to form abstract nouns, sometimes... |
| 6 | Latin | -ius | forming adjectives from nouns; nominative neuter... |
| 7 | Proto-Italic | -jōs | Forms comparative adjectives |
| 8 | Proto-Indo-European | -yós | Creates adjectives from noun or verb stems |