‘ōu‘anga, nom. Time or state of youth or newness.

I tō rātou ‘ōu‘anga,
when they were young, in their youth;

e tenana e akamanako i Tei anga ia koe i to ou anga ra.
and now remember while you are young the One who created you (Eccl. 12.1). [‘ōu, -‘anga4.]