Humanitarians rhymes with:
totalitarians, vegetarians, libertarians, parliamentarians, totalitarians, vegetarians, aeriens, barbarians, bilzerian's, bulgarians, centenarians, contrarians, disciplinarians, hungarians, kazarian's, libertarians, librarians, marian's, marion's, parliamentarians, seminarians, totalitarians, vegetarians, veterinarians
Humanitarians sounds like:
hamtramck, hindering, hindrance, hindrances, hondurans