vader

to go

“Il vadait dans la prairie avec son pirogue et il attendait des pièges.” — He would go into the prairie with his pirogue and he would wait on the traps.

From Latin vadere. Related to vas and va (as conjugations of aller), but not derived from either.

to get away

Either directly from Latin vadere or a shortening of s'évader. In any case, ultimately from Proto-Indo-European *weh₂dʰ-.