Welsh ech-

← Proto-Celtic *exs- (inherited)

← Irish as (cognate)

← Ancient Greek ἐκ- (cognate)

← Proto-Indo-European *h₁eǵʰs (derived)

← Latin ex- (cognate)

← Old Irish ess- (cognate)

→ Welsh eang (mention)

→ Welsh echryd (affix)

→ Welsh echdoe (affix)