The phrase "come down from your high horse" is a way of telling someone to stop being arrogant or conceited. Antonyms for this phrase might include words such as humble, modest, or unassuming. These words describe a person who is not haughty or pretentious, but rather someone who is modest and down-to-earth. Other antonyms might include words that describe a person who is open-minded and willing to listen to others, such as receptive, approachable, or inclusive. Ultimately, the opposite of "coming down from your high horse" is simply being a good listener and treating others with sincerity and respect.