The phrase "most pie in the sky" refers to something unrealistic or unlikely to happen. Its opposite or antonym would be something that is grounded in reality, achievable, or practical. Some possible antonyms for this phrase could include realistic, practical, feasible, attainable, or achievable. These words suggest that the idea being discussed is something that is within reach, rather than unrealistic or unattainable. By using antonyms to "most pie in the sky," we can communicate a clear message that acknowledges the limitations and obstacles of a situation while also presenting realistic solutions and options for moving forward.