eternal
US /ɪˈtɝː.nəl/
UK /ɪˈtɝː.nəl/

1.
eterno, sempiterno
lasting or existing forever; without end or beginning.
:
•
The universe is often considered to be eternal.
El universo a menudo se considera eterno.
•
She believes in eternal love.
Ella cree en el amor eterno.
2.
eterno, constante
used to emphasize the continuous or constant nature of a state or quality.
:
•
His eternal optimism always brightens the room.
Su eterno optimismo siempre ilumina la habitación.
•
I'm tired of your eternal complaints.
Estoy cansado de tus quejas eternas.