Where does “tchíonn” come from?

tchíonn (Irish) comes from Irish ann, from Old Irish and, from Proto-Celtic andom, from Proto-Indo-European h₁n̥dó, from Proto-Indo-European h₁én — in.

Ancestry of “tchíonn”, step by step

tchíonn traces back through two separate lines of ancestry.

via Irish ann

StepLanguageWordMeaning
1Irishannthere; third-person singular masculine of i: in...
2Old Irishandthird-person singular masculine/neuter dative of...
3Proto-Celticandomthere
4Proto-Indo-Europeanh₁n̥dóinto, inside
5Proto-Indo-Europeanh₁énin

via Norman tchi

StepLanguageWordMeaning
1Normantchiwho; which; that
2Old FrenchkiAlternative form of qui
Every word from Proto-Indo-European h₁én →Every word from Proto-Indo-European h₁n̥dó →Every word from Proto-Celtic andom →