The phrase "polish the apple" is commonly used to describe the act of trying to gain favor by flattery or by presenting oneself in a positive light. There are a variety of synonyms for this phrase, including "butter up," "flatter," "adulate," "fawn over," "toady to," "curry favor with," "compliment," and "sweet talk." These terms all imply an attempt to win someone over through compliments or flattery, often with the intention of getting something in return. While these tactics may be effective in the short term, they can often lead to a loss of trust and respect in the long run.