Synonyms of improperly

2 Syllables
afoul, badly
3 Syllables
awkwardly, unduly, naughtily, evilly, clumsily
4 Syllables
illegally, malfunctioned, criminally
5 Syllables
unethically, indecorously
6 Syllables
inadequately, inappropriately
7 Syllables
disproportionately