The Collaborative International Dictionary of English v.0.48:
Witling \Wit"ling\, n. [Wit + -ling; cf. G. witzling.]
A person who has little wit or understanding; a pretender to
wit or smartness.
A beau and witing perished in the forming. --Pope.
Ye newspaper witlings! ye pert scribbling folks!
Moby Thesaurus II by Grady Ward, 1.0:
68 Moby Thesaurus words for "witling":
Boeotian, Gothamite, banana, block, burlesquer, caricaturist, clod,
clown, comedian, comic, cutup, dimwit, dolt, donkey, dope, dullard,
dumb cluck, dumbbell, dummy, dunce, epigrammatist, funnyman,
gag writer, gagman, gagster, gowk, humorist, ironist, jester,
jobbernowl, joker, jokesmith, jokester, lackwit, lamebrain,
lampooner, lightweight, looby, loon, madcap, niais, nincompoop,
ninny, ninnyhammer, nitwit, noddy, parodist, prankster, punner,
punster, put, quipster, reparteeist, satirist, smart ass, stupid,
thickwit, wag, wagwit, wise fool, wise guy, wiseacre, wisecracker,
wisehead, wiseling, wisenheimer, wit, zany