Where does “-ǫl” come from?

-ǫl (Proto-Brythonic) comes from Proto-Celtic -ālos, from Proto-Indo-European -eh₂los, from Proto-Indo-European -los — Forms diminutive nouns from noun stems.

Ancestry of “-ǫl”, step by step

StepLanguageWordMeaning
1Proto-Celtic-ālosUsed to form adjectives from nouns
2Proto-Indo-European-eh₂los—
3Proto-Indo-European-losForms diminutive nouns from noun stems
Every word from Proto-Indo-European -los →Every word from Proto-Celtic -ālos →Every word from Proto-Indo-European -eh₂los →