Dévisagent comes from the verb dévisager, which means to stare at someone, often with an intense or scrutinizing gaze. It's more than just looking; it implies a prolonged and sometimes unsettling observation.
In the song, GIMS uses this word to describe how people are constantly judging and observing him and others, highlighting the pressure and scrutiny that comes with fame and life in the public eye. He repeats the phrase "Tous les gens te dévisagent" (Everyone stares at you), emphasizing a feeling of being constantly watched and judged.
Two rappers at the top of French rap in 2013, complaining that getting there spoiled it. The line Gims keeps coming back to is "Tous les gens te dévisagent" (everyone stares you down), and the verse around it blames the music itself: "Le son nous a niqué, le son nous a niqué" (the music screwed us over, the music screwed us over), measured against what it used to be, "À la base on faisait tout ça pour s'amuser" (originally we did all this just for fun).
The hook is a challenge nobody has taken up. "One shot, des tonnes de sons, du surplus, je sais plus quoi donner" (one shot, tons of tracks, more than enough, I do not know what else to give), then "One shot, j'attends toujours celui qui viendra m'étonner" (one shot, I am still waiting for the one who will surprise me). Dry answers from the years before it worked: "J'ai connu la hess, connu la dèche" (I have known the struggle, known being broke). By the last verse Gims is listing what strangers now assume about him, "Se demandent si je tape dans la blanche" (they wonder if I am into the white stuff), and the song runs itself out on one repeated line, "Perdu dans le pump, pump it up" (lost in the pump, pump it up).