from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. Approximately; in a way; partially; not quite; somewhat.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. to some (great or small) extent
From a reanalysis of "sort of" in a phrase such as "a sort of merry dance" from noun ("sort") and preposition ("of") from the prepositional phrase "of merry dance" to adverb modifying "merry". (Wiktionary)