The opposite of "big" is...
small
The opposite of "right" is...
wrong
The opposite of "a fake friend" is...
a true friend
The opposite of "fake" is...
true
The opposite of "true" is...
fake
The opposite of "huge" is...
tiny
The opposite of "wrong" is...
right
The opposite of "small" is...
big
The opposite of "a true friend" is...
a fake friend
The opposite of "tiny" is...
huge