American Heritage Dictionary
(2)
Century Dictionary
(1)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
Everybody knows that behind that avuncular, amiable exterior lies a ruthless, Machiavellian mind which is only interested in gaining power and holding onto it.— Home
Such a theory would seem to favor the avuncular John McCain over the inspirational Barack Obama-the old, white, conservative man with the military bearing, over the brash young newcomer who, as Obama himself has said, "doesn't look like all those other presidents on the dollar bills."— MoJo Blogs and Articles

American Heritage Dictionary (1)
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 about twice a year.