A person who opposes egotism and practices or advocates for humility and modest behavior.
From antiegotism + -ist (person who practices). The -ist suffix identifies someone who actively practices antiegotistic principles or philosophy.
Some of history's greatest leaders—Lincoln, Churchill, Mandela—were famous antiegotists despite enormous power, refusing to parade their importance or take excessive credit.
Complete word intelligence in one call. Free tier — 50 lookups/day.