Rigorous and Stiff

Rigorous adjective - Given to exacting standards of discipline and self-restraint.

Stiff is a synonym for rigorous in severe topic. In some cases you can use "Stiff" instead the word "Rigorous" as an adjective or a noun. popular alternative

Nearby Words: rigorously, rigor, rigour, rigorism

Stiff adjective - Difficult to endure.

Rigorous is a synonym for stiff in severe topic. You can use "Rigorous" instead an adjective "Stiff", if it concerns topics such as harsh, extreme. popular alternative

Nearby Words: stiffen, stiffness, stiffed, stiffly, stiffened