ro·bust (rō-bŭst, rōbŭst′)
1. Full of health and strength; vigorous. See Synonyms at healthy.
2. Powerfully built; sturdy: a robust body.
3. Requiring or characterized by much strength or energy: a robust workout.
a. Active or dynamic: a robust debate; a robust economy.
b. Working in an effective way; effective or productive: a robust search engine; a robust hypothesis.
5. Marked by richness and fullness; full-bodied: a robust wine.
6. Substantial in amount: robust gains in stock prices.
7. Rough or crude; coarse: a robust tale.
[Latin rōbustus, from rōbur, rōbus, oak, strength; see reudh- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.