The opposite of loose is
Tight
The opposite of clean is
Dirty
The opposite of rude is
Polite
The opposite of diligent is
Lazy
The opposite of dark is
Bright
The opposite of messy is
Tidy
The opposite of male is..
Female
The opposite of courageous is
Cowardly
The opposite of right is
Wrong
The opposite of light is
Heavy
The opposite of generous is
Stingy
The opposite of common is
Special
The opposite of talkative is
Quiet
The opposite of many is
Few
The opposite of wet is
Dry
The opposite of thick is
Thin
The opposite of right is
Left
The opposite of narrow is
Wide
The opposite of humble is
Arrogant
The opposite of far is
Near