Prime Minister Najib Abdul Razak has ridiculed the opposition pact as one that is "laughable", whose relationship among component parties is nothing but a "marriage of convenience".

"It's almost laughable what they do - it's a marriage of convenience. If we want to be kind to them, we say that," he told MIC delegates at the party's annual general meeting today.

"But in reality, it's Machiavellian politics, where the enemy of your enemy is my friend."