The definition of fortitude is having strong will in the face of danger or pain.
An athlete who continues a race in spite of an injury is an example of fortitude.
the strength to bear misfortune, pain, etc. calmly and patiently; firm courage
Origin of fortitudeMiddle English from Classical Latin fortitudo from fortis, strong: see fort
Strength of mind that allows one to endure pain or adversity with courage.
Origin of fortitudeMiddle English from Latin fortitūdō from fortis strong ; see bhergh-2 in Indo-European roots.