means the capacity to recover quickly from difficulty, adapt to setbacks, and bounce back into shape after being stressed or knocked down.

from From Latin resilire, "to leap back" or "recoil" — built from re- ("back") plus salire ("to jump," the same leaping root that springs up in salmon and somersault). It entered English in the 17th century as a term about physical springiness — how a material rebounds after being bent or compressed — before it leapt across to describe the human knack for bouncing back from hardship.