Antonyms for the phrase "puts finishing touch on" include words like mess up, ruin, destroy, damage, and mar. These words indicate the opposite of what the phrase "puts finishing touch on" means. Instead of adding the final touches and perfecting something, these antonyms suggest harming or spoiling it. Other antonyms include words like neglect, forsake, abandon, and ignore, which indicate a lack of care or attention to detail. Using these antonyms can help create a contrast in writing or speech and provide a clearer understanding of the intended meaning.