The phrase "kicks in the teeth" is a negative expression that refers to an unexpected setback or disappointment. However, there are several antonyms that can convey a positive or neutral meaning instead. For instance, instead of "kicks in the teeth," one can use "a pleasant surprise," "unexpected success," or "a lucky break." Other alternatives to this phrase include "a welcome development," "a stroke of good fortune," or "a turning point." By choosing these antonyms, individuals can communicate optimism and positivity rather than negativity and pessimism, and can also avoid offending or depressing others with their language.