That's one of my wife's favorite words.
sea's post, above, put me in a "v" frame of mind...
vast
variegated
vernal
voluptuous
zeitgeist
palindrome
crepuscular
atavistic
peripatetic
re-g*d*mn-diculous
sine qua non
a priori
And, although "favorite" certainly isn't the right term for it, there is another disturbingly fascinating word I shall quite likely never forget - as in, try as I might I simply cannot get my little brain around exactly why the creation of the word was even necessary. In deference to gentler souls than I, however, I shall herein leave that word unspoken...
a priori
finagle
perturbed
douchebaggery (collective term for activities that would warrant calling someone a .......... See also asshattery.)
morose