vaciller
[vasije]verbe intransitif
1) (être chancelant) [personne] to be unsteady on one's legs; [jambes] to be unsteady
2) (osciller) [personne, objet] to sway; [lumière, flamme] to flicker
3) (se détériorer) [santé, mémoire, raison] to fail; [pouvoir, majorité] to weaken