He's got a level of intestinal fortitude that I don't know that I've ever seen before. A light went off in him that [he] had to take control of this game, and that's what he did.

He's got some intestinal fortitude, which I don't know if I've ever seen before. Almost as if he has the mentality of a boxer or a football player.

Those observations are pretty much universal, based on what I've heard from other players who have seen him.

In today’s environment politicians spouting a so called sense of 'intestinal fortitude' are simply demonstrating a severe case of factual constipation.

I'll put this team up against any in the state. They play on intestinal fortitude, heart and determination. This a pretty tough bunch.

Guts are a combination of confidence, courage, conviction, strength of character, stick-to-itiveness, pugnaciousness, backbone, and intestinal fortitude. They are mandatory for anyone who wants to get to and stay at the top.