In reply to:

flimflam [One of the many onomatopic reduplications expressive of contempt; cf. fidfad, skimble-skamble, whimwham. Possibly based on a Scandinavian word which may have existed in some Eng. dialects; cf. ON. flim a lampoon, flimska mockery, flimta to flout.]

some wordsmiths have been described as being flimflam *men.

*meant to be all-inclusive

Not to nitpick, but I think the adjective form of onomatopoeia is onomatopoetic...