Here's what rhymes with inappropriate.

Consider these alternatives

immoral / moral insensitive / sensitive irresponsible / responsible obscene / seen deemed / seemed unnecessary / very unwise / size unfair / their unseemly / extremely abusive / inclusive incorrect / effect unwarranted / warranted grossly / closely behaviour / saviour irrelevant / relevant demeaning / meaning unsuitable / suitable misleading / leading wrong / long lewd / food unjustified / side explicit / visit counterproductive / productive unfortunate / fortunate