This one was difficult for me. I wanted to use "melisma," but with melisma it's only the meaning I dislike. The word proper is not objectionable being sort of musical (i.e., mellifluous) on the tongue. Smarmy, describes an undesirable trait and is also painful for me to say. The "y" is probably ok. The "smarm" is all wrong. Perhaps it's the "marm" as in schoolmarm, as I don't like that either. I don't know.