This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The quality of being robust.

n. The quality or state of being robust.

n. The quality of being robust; strength; vigor, or the condition of the body when it has full firm flesh and sound health.

n. the characteristic of being strong enough to withstand intellectual challenge

n. the property of being strong and healthy in constitution

"However, increased mutational robustness caused by gene duplications pales in comparison to drift and selection as a cause for the fixation of gene duplicates, especially because the advantage of robustness is weak in many populations. page 268, Robustness and Evolvability of Living Systems"

characteristic    strength   

scalability    reproducibility    manageability    responsiveness    throughput    maintainability    versatility    resilience    dependability    stamina