What's the opposite of dirty?
clean
What's the opposite of old? (things)
new/modern
What's the opposite of dark?
light
What's the opposite of strong?
weak
What's the opposite of long?
short
What's the opposite of right?
wrong
What's the opposite of slow?
fast
What's the opposite of cheap?
expensive
What's the opposite of old? (people)
young
What's the opposite of tall?
short
What's the opposite of easy?
difficult/hard
What's the opposite of hot?
cold
What's the opposite of good?
bad
What's the opposite of dangerous?
safe
What's the opposite of beautiful?
ugly
What's the opposite of empty?
full
What's the opposite of rich?
poor
What's the opposite of small?
big