Irish roimh

← Gaulish ris (cognate)

← Proto-Celtic *ɸrīs (inherited)

← English first (cognate)

← Proto-Indo-European *per- (derived)

← Latin prīscus (cognate)

← Old Irish ré (inherited)

→ Irish réimír (mention)

→ Scottish Gaelic ro (cognate)

→ Manx roish (cognate)