Dusker is a lesser-known word that means dim or dark. Its antonyms, on the other hand, are more commonly used. Bright, radiant, and luminous are some of the antonyms that can be used to describe the opposite of dusker. The word bright refers to anything that emits a lot of light, causing a great deal of illumination. Radiant means something that shines with great intensity, projecting brightly lit rays. Luminous, on the other hand, pertains to anything that glows in the dark, producing a glowing or shining effect. These opposing words effectively convey a sense of contrast, highlighting the importance of light and brightness in our lives.