What's the opposite of "rich"?
Poor.
What's the opposite of "expensive"?
Cheap.
What's the opposite of "fast"?
Slow.
What's the opposite of "bad"?
Good.
What's the opposite of "fat"?
Thin
What's the opposite of "wrong"?
Right
What's the opposite of "high"?
Low
What's the opposite of "dirty"?
Clean
What's the opposite of "long"?
Short
What's the opposite of "happy"?
Sad
What's the opposite of "beautiful"?
Ugly
What's the opposite of "dangerous"?
Safe
What's the opposite of "big"?
Small.
What's the opposite of strong?
Weak
What's the opposite of "far"?
Near.
What's the opposite of "empty"?
Full.