1 One thing I think you underestimate is how much in the minority you are.
2 A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
3 Psychologists have determined that overconfidence causes people to overestimate their knowledge, underestimate risks.
4 Never underestimate your power to change yourself.
5 None of us should ever underestimate the degree of difficulty women face in career advancement.
6 The official figures are a gross underestimate of the true number.
7 He miscalculated badly when he underestimated the response of the international community to the invasion.