This is the 5970th most frequent French word.
dewaest
"Dewaest" is not a French word; it is a surname.
In this sentence, 'Dewaest' serves as a proper noun, namely the surname of a specific individual, used as the subject of the sentence.
Dewaest est un joueur de football belge.
Dewaest is a Belgian football player.
Here, 'Dewaest' again acts as a proper noun, the possessive form describes who the talent belongs to, showing ownership.
Le talent de Dewaest est reconnu par tous.
Dewaest's talent is recognized by everyone.
In this context, 'Dewaest' indicates a proper noun used in a possessive construction, referring to the subject's performances.