The opposite of SHORT is...
TALL/LONG
The opposite of UP is...
DOWN
The opposite of EXPENSIVE is...
CHEAP
The opposite of COLD is...
HOT
The opposite of NOISY is...
QUIET
The opposite of DIRTY is...
CLEAN
The opposite of CHEAP is...
EXPENSIVE
The opposite of BAD is...
GOOD
The opposite of TALL is...
SHORT
The opposite of CLEAN is...
DIRTY
The opposite of TINY is...
HUGE
The opposite of UNTIDY is...
TIDY
The opposite of LONG is...
SHORT
The opposite of DOWN is...
UP
The opposite of HOT is...
COLD
The opposite of BIG is...
SMALL
The opposite of HUGE is...
TINY
The opposite of NEW is...
OLD
The opposite of NIGHT is...
DAY
The opposite of QUIET is...
LOUD
The opposite of SHORT is...
LONG/TALL
The opposite of TIDY is...
UNTIDY
The opposite of SMALL is...
BIG
The opposite of STRONG is...
WEAK
The opposite of OLD is...
NEW/YOUNG
The opposite of WEAK is...
STRONG
The opposite of DAY is...
NIGHT
The opposite of GOOD is...
BAD