Dim stars are far more common than bright ones. But because they are dim, we can't see them without good telescopes.
Bright stars are rare, dim stars are common, so class M are the most common that we can see, but even dimmer ones are postulated to be even more common.
Dim
...would be dim.
bright
it has bright
bright
Bright and dim are antonyms. Bright means having a high level of light or shining with intensity, while dim means having a low level of light or lacking brightness.
The word opposite to the word dim is bright.
Dim.
If you're talking about a gender difference, then the opposite is a bright girl. Otherwise the opposite of 'bright boy' is 'dull boy'
Bright.
Bright