stoic
noun
[ ˈstəʊɪk ]
• a person who can endure pain or hardship without showing their feelings or complaining.
• a member of the ancient philosophical school of Stoicism.
stoic
adjective
• another term for stoical.
• "a look of stoic resignation"
• of or belonging to the Stoics or their school of philosophy.
• "the Stoic philosophers"
Origin:
late Middle English: via Latin from Greek stōïkos, from stoa (with reference to Zeno's teaching in the Stoa Poikilē or Painted Porch, at Athens).