grandmotherly

adjective2

1. •
   Of or characteristic of grandmothers.

   • “Mr. Norton, your head!” he cried, a strange grandmotherly concern in his voice. — 1952
2. •
   Resembling a grandmother.

   • Then grandmotherly, trust-inspiring 63-year-old Gertrude Pruett stopped sending out the lovely checks and it became harder and harder to get in touch with her or her son Harold. — 2025