eternity

US /ɪˈtɝː.nə.t̬i/
UK /ɪˈtɝː.nə.t̬i/
"eternity" picture
1.

infinite or unending time

:
The universe stretches into eternity.
They swore to love each other for eternity.
2.

a period of time that seems to last forever, especially because it is boring or unpleasant

:
Waiting for the results felt like an eternity.
The lecture dragged on for what seemed like an eternity.