View Message

You're still missing the point Sabertooth, the genitive may have a d and the nominative an s, but that has no relevance to compounds or suffixed forms. ALL declensions were originally ῑ̓ρῐδ- (and only the nominative and vocative have lost the δ), the nominative was ῑ̓́ρῐδς, reduced later to ῑ̓́ρῐς, so all derivatives are normally ῑ̓́ρῐδ- as well.