perpetual
//pərˈpetʃuəl//
Adjective
perpetualCanonical form
1
Never ending or changing; occurring repeatedly without interruption.
The city is in a state of perpetual change.
2
Lasting for an indefinitely long time or seeming to last forever.
The ancient trees seemed to stand in perpetual silence.
3
(Of a position or job) held for life rather than a limited period.
She was appointed as a perpetual member of the board.