Old French hideus

← Old French hisdos (mention)

← Old French hisdus (mention)

← Old French hisda (mention)

← Proto-West Germanic *egisida (mention)

← Proto-West Germanic *agisiþu (derived)

← Proto-West Germanic *agisōn (mention)

← Latin hispidus (mention)

→ English hideous (derived)

→ French hideux (mention)