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robust

[roh-buhst, roh-buhst]
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adjective
  1. strong and healthy; hardy; vigorous: a robust young man; a robust faith; a robust mind.
  2. strongly or stoutly built: his robust frame.
  3. suited to or requiring bodily strength or endurance: robust exercise.
  4. rough, rude, or boisterous: robust drinkers and dancers.
  5. rich and full-bodied: the robust flavor of freshly brewed coffee.
  6. strong and effective in all or most situations and conditions: The system requires robust passwords that contain at least one number or symbol. Our goal is to devise robust statistical methods.
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Origin of robust

1540–50; < Latin rōbustus oaken, hard, strong, equivalent to rōbus-, stem of rōbur oak, strength + -tus adj. suffix
Related formsro·bust·ly, adverbro·bust·ness, nounun·ro·bust, adjectiveun·ro·bust·ly, adverbun·ro·bust·ness, noun

Synonyms

See more synonyms for robust on Thesaurus.com
1. powerful, sound. 4. coarse, rambunctious.

Antonyms

1. feeble. 2. weak.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for un-robust

robust

adjective
  1. strong in constitution; hardy; vigorous
  2. sturdily builta robust shelter
  3. requiring or suited to physical strengtha robust sport
  4. (esp of wines) having a rich full-bodied flavour
  5. rough or boisterous
  6. (of thought, intellect, etc) straightforward and imbued with common sense
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Derived Formsrobustly, adverb

Word Origin

C16: from Latin rōbustus, from rōbur an oak, strength
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for un-robust

robust

adj.

1540s, from Middle French robuste (14c.) and directly from Latin robustus "strong and hardy," literally "as strong as oak," originally "oaken," from robur, robus "hard timber, strength," also "a special kind of oak," named for its reddish heartwood, from Latin ruber "red" (cf. robigo "rust"), from PIE *reudh- (see red (adj.1)). Related: Robustly; robustness. Robustious (1540s) was a common form in 17c. (cf. "Hamlet" iii.2); it fell from use by mid-18c., but was somewhat revived by mid-19c. antiquarian writers.

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Online Etymology Dictionary, © 2010 Douglas Harper