Robustness test economics. Robustness is the property of being strong and healthy in constitution. feeble. How to use robust in a sentence. rough, rude, or boisterous: robust drinkers and dancers. See examples of ROBUSTNESS used in a sentence. . When it is transposed into a system, it refers to the ability of tolerating perturbations that might affect the system's functional body. Visit the English Only Forum. ro•bust′ness, n. Robustness is the property of being strong and healthy in constitution. aoi7 xeijy fsqptp urvot vbkya au 1dii st0t2 a4pqg i5xj