Ambĩrĩria

v.

1. to begin; "to start or commence; initiate an action, process, or journey, often marking important transitions in Gĩkũyũ cultural activities

Example: "William Ruto nĩ hĩndĩ araninire mĩaka ĩrĩ kuma ambĩrĩria gwathana." — William Ruto has now ruled for two years since he began leadership.