Accedence, which refers to the act of agreeing or consenting, has several antonyms or words with opposite meanings. One antonym is dissent, which means to disagree or withhold approval. Another antonym is refuse, which refers to the act of declining or rejecting something offered. Deny is also an antonym of accedence, meaning to declare untrue or reject a request. Disallow and veto are related antonyms that mean to refuse to allow or approve something. Lastly, dissuade is an antonym that means to persuade or deter someone from agreeing or consenting to something. Knowing these antonyms can help deepen one's understanding of the meaning of accedence and enhance communication skills.