The opposite of weak is ...
strong
The opposite of dark is ...
bright
The opposite of noisy is ...
quiet
The opposite of expensive is...
cheap
The opposite of beautiful is ...
ugly
The opposite of bitter is...
sweet
The opposite of smooth is ...
rough
The opposite of shallow is ...
deep
The opposite of deep is...
shallow
The opposite of bright is ...
dark
The opposite of sweet is...
bitter
The opposite of cheap is...
expensive
The opposite of rough is ...
smooth
The opposite of ugly is...
beautiful
The opposite of strong is ...
weak