Where does “deimhnigh” come from?

deimhnigh (Irish) comes from Irish -igh, from Old Irish -igidir, from Proto-Celtic *-sagyetor — denominative/causative suffix.

deimhnigh (Irish): confirm; certify; verify

Definitions

  1. confirm; certify; verify

Ancestry of “deimhnigh”, step by step

StepLanguageWordMeaning
1Irish-ighSuffix used to form verbs from nouns;...
2Old Irish-igidira suffix used to form verbs from nouns and...
3Proto-Celtic*-sagyetordenominative/causative suffix
Every word from Proto-Celtic *-sagyetor →Every word from Irish -igh →Every word from Old Irish -igidir →