What about we begin a wiktionary list of suggested neologisms... i've got a couple of related ones, 'appronym', to describe a word that sounds appropriate, like 'hug', 'deft' and 'taut'. This is for words that aren't onomatopaeic, but somehow 'fit'.
My second word is its antonym, 'contranym', a word that doesn't sound as if it belongs to the thing it describes. This is a much smaller set of words, for example: 'pulchritudinous'.
The web site to which this link points to is down. Neologisms in Journalistic Text