PKR deputy president Azmin Ali has dismissed former prime minister Najib Abdul Razak's adopted online moniker of 'Bossku'.

Instead, the economic affairs minister accused Najib, who is facing a slew of charges, of being 'Pencuriku' (my thief).

“To me, he isn't 'Bossku' but ‘Pencuriku’,” he said during the launch of the Wanita Pakatan Harapan operations room in Semenyih last night, as reported by the Malay Mail.

Azmin also called out Najib on the move to defer his trial related to SRC International Sdn Bhd, which was supposed to start yesterday.

The Court of Appeal had allowed Najib's application to stay the trial pending his appeal to transfer the case from the Sessions Court to the High Court.

“If 'Bossku' is truly confident of his innocence, why defer the trial?” Azmin asked.

Najib has been charged with three counts of money laundering, three counts of criminal breach of trust and one count of abuse of power in the SRC International case. He has consistently maintained that the trial will prove his innocence.

With the Semenyih by-election nearing, Azmin also challenged Najib to campaign in the constituency as he did in the Cameron Highlands by-election.

“Only now he is riding bikes, eating roti canai, wearing a sarong - albeit wrongly - and taking a taxi ride. While this may work in Cameron Highlands, I would like to see him try it in Semenyih.

“The Malays in Semenyih aren't the same as in Cameron Highlands. They're not Melayu pekan (small town Malays).

"That is why I want to see if 'Bossku' comes here or not.

“I will wait for you in Semenyih, I will chase you and catch you and expose you as a thief of the country,” he added.

The Semenyih by-election is set for March 2 while the nomination day is this Saturday.