robot = R = rococo

robust adj.

Said of a system that has demonstrated an ability to recover gracefully from the whole range of exceptional inputs and situations in a given environment. One step below bulletproof. Carries the additional connotation of elegance in addition to just careful attention to detail. Compare smart, oppose brittle.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.