My Suggestions

riganĩrũo

v.

  1. be forgotten. Be forgotten. To be no longer remembered or kept in mind (passive form).

Example: Na nĩ kũriganĩrũo maariganĩirũo nĩ mĩĩkĩre yake, (They forgot his deeds,); Mũrungu-rĩ, nĩ kũriganĩrũo ariganĩirũo nĩ uuma-andũ wake? (Has God’s mercy ceased forever?)