This is the 492nd most frequent French word.
contraire
Opposite.
'du contraire' is used to indicate opposition or contradiction.
Il est toujours du contraire lorsqu'on propose une idée.
He always takes the opposite position when an idea is proposed.
'Le contraire' is used here to mean the opposite or reverse of something.
Le contraire de l'amour n'est pas la haine, mais l'indifférence.
The opposite of love is not hate, but indifference.
'Contrairement à' is used to express opposition or contrast to a thought or idea.