"Overcast" is a word used to describe the condition of the sky when it is completely or almost completely cloudy. The word "overcast" can be paired with several antonyms. "Clear" is the most direct antonym for "overcast." "Sunny" and "bright" would also work as antonyms for "overcast." Other potential antonyms include "unclouded," "cloudless," and "blue-sky." By using these antonyms, one can describe the sky and weather conditions more accurately, and convey different moods and emotions. An overcast sky may indicate sadness or gloom, while a clear, blue-sky can evoke happiness and cheerfulness.