stamina
staying power
toughness

I should like to thank the House for its extraordinary staying power.

She still looks really good and I applaud her staying power.

It is a testament to her staying power - she has come back without ever going away!

Does punk have any more commercial staying power than it did in the 1970's?

Will any of these works have their staying power?

They don't have the extended staying power of a retriever.

If investors include bonds, he said, "They have greater staying power."

It has more staying power than a quick outburst of rage.

We have to find out more about that first-strike capability and then see what their staying power is like.