The word "overcasts" refers to the state of being covered or obscured by clouds. Its antonyms, on the other hand, are clear, sunny, and bright. Clear refers to a sky that is completely free of clouds, while sunny pertains to a sky that is bright and filled with sunshine. Bright, on the other hand, means a condition where the sky is filled with light and seems cheerful. The antonyms of overcasts are also associated with a positive atmosphere compared to overcasts, which generally convey a feeling of gloom and sadness.