This is the 8430th most frequent French word.
acharné
Fierce, relentless, or determined.
Here, 'acharnée' is used as an adjective to describe the intensity and persistence of someone's will.
Il a une volonté acharnée de réussir.
He has a determined will to succeed.
In this sentence, 'acharnée' describes the fierce and intense nature of the competition.
Les équipes ont livré une bataille acharnée sur le terrain.
The teams delivered a fierce battle on the field.
In this example, 'acharnée' refers to the person's unyielding dedication and effort towards their work.