superannuate

verb

1. To retire or put out of use due to age.

2. To show to be obsolete due to age.

3. To retire due to age.

4. To become obsolete or antiquated.

5. To give a pension to, on account of old age or other infirmity; to cause to retire from service on a pension.

6. Retire and pension (someone) because of age or physical inability

7. Retire or become ineligible because of old age or infirmity