Nassim Taleb says he gave the name "antifragile", for lack of a better one, to the class of phenomena that gain from disorder through a convexity bias.

True if the evidence shows Taleb introduced the term 'antifragile' (or 'antifragility') for things that gain from volatility or disorder through convexity, and no significant prior use of the term for this concept exists. Mostly true if he clearly popularised and defined the term for this concept but there were scattered, unrelated or minor earlier uses of the word. Mixed if an earlier use of essentially the same concept under that name exists but Taleb developed the term independently. Mostly false if someone else demonstrably coined and used the term for the same concept before him and he adopted it. False if the term and concept clearly originated with someone else.

Set before the research began.

1. E1 Nassim Nicholas Taleb's 'Antifragile' dares us to expect the unexpected Los Angeles Times · 20 December 2012

   “Taleb coins a new word for this unique kind of strength: antifragility.”

2. E2 Nassim Taleb Releases Antifragile NYU Tandon School of Engineering news · 20 December 2012 Own record

   “Taleb coined the adjective “antifragile” to describe the phenomenon.”

3. E3 Antifragility - Wikipedia Wikipedia · 23 January 2011

   “The concept was coined by Nassim Nicholas Taleb in his book, Antifragile, and in technical papers.”

4. E4 Nassim Nicholas Taleb on Accepting Uncertainty, Embracing Volatility Wharton School, University of Pennsylvania (Knowledge@Wharton) · 17 December 2012

   “and at the far right, in the absence of a better word for it, is antifragility.”

Independent sources say Taleb coined the term: the Los Angeles Times review states he 'coins a new word' for this kind of strength, 'antifragility' (E1), and the Wikipedia entry says the concept was coined by Taleb in his book and technical papers, naming no earlier user (E3). The NYU item (E2), which is not independent, and the Wharton article (E4) are consistent with this and with his framing of the term as chosen for lack of a better word. No evidence shows significant prior use of the term for this concept.