the words bright and dim are antonyms because they are opposites
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.
Bright
Bright.
Dim.
dense, dim-witted, dull, foolish, moronic, simple minded
dark, gloomy, murky, shady, shadowy, dusky, tenebrous, cloudy, grey, dismal, overcast
Bright.
The word opposite to the word dim is bright.
If you're talking about a gender difference, then the opposite is a bright girl. Otherwise the opposite of 'bright boy' is 'dull boy'
An antonym for dim is low light
Dim
...would be dim.
bright
it has bright
bright
Dim.
dim, hazy, cloudy
Bright.