manatoko
1. (verb) (-na,-tia) to verify, validate, give credence.
I te tau 1987 ka whakamanahia te reo Māori, ā, taro ake ka whakatūria ngā wānanga Māori, ngā reo irirangi Māori me Whakaata Māori hei manatoko i te reo Māori (Te Ara 2017). / In 1987 Māori became an official language, and after a time Māori-language educational institutions, radio stations and Māori Television were established to give credence to the language.