modesty
n. uncountablen. the quality of not talking too much about your own skills or successes. It can also mean dressing or behaving in a way that is simple and not showing too much of your body.
n. the quality of being humble and avoiding excessive self-praise regarding one's achievements or abilities. In a physical context, refers to behavior or dress intended to avoid impropriety or the display of the body.
He accepted the award with great modesty.
Despite her massive success in the tech industry, she maintained a sense of modesty that made her very approachable.
The architect's design was praised for its structural modesty, as it managed to provide ample living space without dominating the natural landscape of the valley.
Commonly paired with the preposition 'about' when referring to achievements.