Which of these would apply?
ro·bust adjective \rō-ˈbəst, ˈrō-(ˌ)bəst\
Definition of ROBUST
1a : having or exhibiting strength or vigorous health b : having or showing vigor, strength, or firmness <a robust debate> <a robust faith> c : strongly formed or constructed : sturdy <a robust plastic> d : capable of performing without failure under a wide range of conditions <robust software>
2: rough, rude <stories … laden with robust, down-home imagery — Playboy>
3: requiring strength or vigor <robust work>
4: full-bodied <robust coffee>; also : hearty <a robust dinner>
5: of, relating to, resembling, or being a relatively large, heavyset australopithecine (especially Australopithecus robustus and A. boisei) characterized especially by heavy molars and small incisors adapted to a vegetarian diet — compare gracile 3
— ro·bust·ly adverb
— ro·bust·ness \-ˈbəs(t)-nəs, -(ˌ)bəs(t)-\ noun