Humility is a human virtue attributed to those who have developed awareness of their own limitations and weaknesses, and act accordingly.
The Bible describes humility as meekness, humiliation and the absence of the ego. The Greek word translated "humility" in Colossians 3:12 and elsewhere, literally means "humility of mind", then we see that humility is an attitude of the heart, not simply an external behavior. Someone might have an appearance of humility, but with a heart full of pride and arrogance.