American Heritage Dictionary
(1)
Century Dictionary
(3)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
Key of Dee was an occasional revelation -- spunky, listenable, and clever.— Pitchfork: Latest News
She has a much better memory than I do -- spunky and deserves to keep her subarachnoid space.— theHeart.org
Yes Palin is attractive, spunky, an energetic communicator and extraordinarily confident.— BV on Sports
She's spunky, bold, fun, independent, and assertive.— race42008.com

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.