The sound of a word can also effect the way people interpret a word totally separate from onomatopoeia.
I was also talking to Curtis when he used the word "denizen." If you look up the word in the dictionary it is pretty harmless, it simply means inhabitants of an area. Say it aloud to yourself, or even read it in a sentence, and it carries a sinister feel to it.
So even though not onomatopoetic many words carry a personality separate from their meaning but related to the way they sound or appear when written.
I can't think of a word that fits this category other than "denizen" but if anyone else can post it here that it will be manifest before us. Hmm... perhaps manifest might fit in there.
Drake.