Where does “-ach” come from?

-ach (Welsh) comes from Middle Welsh -ach, from Proto-Brythonic -ox, from Latin -ōsus, from Old Latin -ōssus.

-ach (Welsh): Forms a comparative adjective; pejorative suffix;...

Definitions

  1. Forms a comparative adjective; pejorative suffix;...

Ancestry of “-ach”, step by step

StepLanguageWordMeaning
1Middle Welsh-achforms a comparative adjective
2Proto-Brythonic-oxForms the comparative of an adjective
3Latin-ōsusose, -ous, -ful (full of or overly prone to)
4Old Latin-ōssus

Words derived from “-ach

Every word from Old Latin -ōssus