Stoic (noun)

1. A person who can endure pain or hardship without showing their feelings or complaining.
2. A member of the ancient Greek school of philosophy founded by Zeno, which taught that people should be free from passion, unmoved by joy or grief, and submit without complaint to unavoidable necessity.

Origin:

Late 16th century: via latin from greek stōïkos "of the stoics", from stoa "porch", the name of the school of philosophy founded by zeno of citium.

Examples:

1. He was a stoic in the face of adversity.
2. He was stoic about his injury and didn't complain.
3. The stoic philosophy teaches that we should be indifferent to pleasure and pain.
4. He was a stoic warrior who felt no fear.
5. The stoic's calm demeanor gave no indication of the turmoil inside.