Antonyms for the phrase "slap the face" are words that connote kindness, civility, and respect. Some antonyms for this phrase can include "compliment," "appreciate," or "praise." These words can be used to express positive and uplifting sentiments toward someone or something. They are indicative of a person's ability to show consideration and empathy toward others, rather than resorting to harmful or aggressive behavior. By using antonyms such as these, one can demonstrate their willingness to build healthy relationships based on positivity and understanding, rather than negativity and animosity.