This is the 1723rd most frequent French word.
adverse
Opposing or unfavorable.
Here, 'adverses' is used as an adjective to describe negative or unfavorable circumstances.
Ils ont fait face à des circonstances adverses durant leur voyage.
They faced adverse circumstances during their journey.
In this sentence, 'adverse' characterizes the unfavorable conditions of the weather as a reason for the game's cancellation.
La météo adverse a causé l'annulation du match.
The adverse weather caused the cancellation of the game.
Here, 'adverses' describes the unfavorable nature of the criticisms faced by the player.