The word "consultatory" refers to something that gives advice or seeks advice. Therefore, some antonyms for this word could include words that have a completely opposite meaning. Such words include "dictatorial," "authoritative," "imperial," "domineering," or "presumptuous." These words all suggest an attitude of arrogance or control, rather than seeking or giving advice. Other antonyms for consultatory could be "uninformed," "ignorant," "inexperienced," or "unenlightened." But, all of these words do not provide any kind of advice or the willingness to seek guidance, whereas, consultatory is a word that carries a positive connotation of seeking and giving advice.