The antonyms for the word "pro-pone" are "reject," "oppose," "disapprove," "deny." To reject means to refuse to accept or consider. To oppose means to be against something or someone. Disapprove means to have a negative opinion about something, to judge it unfavorably. Deny means to refuse to give or acknowledge something. Opposite to pro-pone, they all indicate the negative attitude towards a proposal, an idea, or a plan. It is important to learn antonyms to improve communication skills and understanding of language. By knowing the opposite of pro-pone, one can express their disagreement clearly and effectively.