Where does “ain-fhìor” come from?

ain-fhìor (Scottish Gaelic) comes from Scottish Gaelic fìor, from Old Irish fír, from Proto-Celtic wīros, from Proto-Indo-European weh₁ros, from Proto-Indo-European weh₁- — true.

ain-fhìor (Scottish Gaelic): untrue

Definitions

untrue

Ancestry of “ain-fhìor”, step by step

Step	Language	Word	Meaning
1	Scottish Gaelic	fìor	true, real; very
2	Old Irish	fír	true; truth
3	Proto-Celtic	wīros	true
4	Proto-Indo-European	weh₁ros	true
5	Proto-Indo-European	weh₁-	true

Every word from Proto-Indo-European weh₁- →Every word from Proto-Indo-European weh₁ros →Every word from Proto-Celtic wīros →