Can anyone think of a paradoxymoronomatopoeic word?

Back in high school (about 30 years ago), a friend and I came up with the concept of a paradoxymoronomatopoeic word – a word that sounds like the opposite of what it means. The closest I could get was "opaque." It definitely sounds like you should be able to see through something that's opaque, like it's kinda open-ish. Can anyone come up with other/better examples?