The ability to remain stoic during difficult situations. Despite all of the hardships he faced, John always kept a stiff upper lip and didn't let anything bother him.The players were devastated after losing the championship, but their coach encouraged them to keep a stiff upper lip and focus on doing better next year.
an ability to stay calm and not show feelings of sadness or fear You weren't allowed to show emotion in those days. You had to keep a stiff upper lip at all times.I never once saw my father cry or show any sign of vulnerability - it's that old British stiff upper lip.