perpetuity

he did not believe in the perpetuity of military rule.

The plots where they were buried were dedicated in perpetuity to the United States.

to hold land in perpetuity

a contract in perpetuity

to ensure the perpetuity of a tradition

to preserve something in perpetuity

to pass down knowledge in perpetuity

to guarantee benefits in perpetuity

to establish a fund in perpetuity

to protect the environment in perpetuity