'Restive' and 'inflammable', at first sight, suggest meanings opposite to their actual meanings, so I call them inaptonyms, though surely someone can suggest a less inapt term for them than my inept effort. There's another, more interesting, type of inaptonym, namely words such as 'pulchritude', where the inaptness is more visceral than visual, if you know what I mean. More inaptonyms anyone?