adverb. 1. Absolutely. 2. Absolutely diddly-squat.
Related terms: absoschmuckinglutely, absogoddamnlutely, absofrikkinlutely, mur-diddly-urdler, dil-diddly-emma, diddlywhacker, son of a diddly, diddly-poo, cock-a-diddly-ding-dong-doo-doo.
Real citation: "From chrissy: Do you have any spoilers on Charmed's eppys to come?
Absodiddly. Coolio guest stars mid March as a demon who crashes Phoebe's wedding. (He loves those WB witches: He also guest starred on Sabrina.) And the wedding is a big ol' mess: The Source snatches Cole's body in an attempt to transform the ceremony into a demonic wedding, allowing their foretold son to become heir to the underworld. Coolio is a demon servant of the Source, whose job is to detain the girls...with pain."
("Watch with Wanda," Feb. 25. 2002, E! Online, http://www.eonline.com/Gossip/Wanda/Trans/Archive2002/
Made-up citation: "Billy's done absodiddly nothing today, again--I think his ambition drowned in the bong water."