Definition of "mettlesome" [met•tle•some]

• Full of mettle; spirited and plucky. See Synonyms at brave. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The primeval versions of Alone in the Dark were critically panned, and with beatific reason: the mettlesome was a preventative mess."
• "Media figures seemingly unmoored from the moderating influence of superego, revealing cheerily oblivious chauvinism (Chris Matthews, Keith Olbermann) and impressively mettlesome candor about gender bias (Couric, Campbell Brown)."
• "WOW Accounts is the biggest, best, and most poems MMORPG mettlesome to date."