éternelle

/etɛʁnɛl/éternel
1.
adjectivefeminineSing

eternal

everlasting

never-ending

Elle rêve d'une jeunesse éternelle.

She dreams of eternal youth.

2.
adjectivefeminineSing

constant

perpetual

recurrent (used of something that keeps happening)

Je suis fatigué de sa rengaine éternelle.

I'm tired of her never-ending refrain.