Australia's pro-republic Prime Minister Malcolm Turnbull on Monday scrapped knights and dames from the nation's honours system, less than a year after a furor sparked by the award of a knighthood to Prince Philip, Queen Elizabeth's husband.

Former Prime Minister Tony Abbott, a staunch monarchist, reintroduced the antiquated honours in 2014, provoking criticism that he was out of touch with public sentiment. Abbott was ousted by Turnbull in a party coup in September.

The politically disastrous decision to give Prince Philip the nation's highest honour, Knight of the Order of Australia, on Australia Day, has been cited as the beginning of the end for Abbott.

The decision by Turnbull, a former head of the national republican movement, to scrap the honours may be interpreted as a signal of his willingness to revisit the thorny question of Australia's relationship with the monarchy.

"Knights and dames are titles that are really anachronistic, out of date and not appropriate in 2015," Turnbull told reporters.

'Knights and dames are titles that are really anachronistic, out of date and not appropriate in 2015.' - Malcolm Turnbull, Australia's PM

Greens Party leader Senator Richard Di Natale welcomed the decision, even as he used it to mock the government.

"It says something about the standard of leadership in this country that installing knights and dames was one of the most significant acts of our former prime minister, and undoing that folly is so far one of the most significant acts of our new one," he said in a statement.

Malcolm Turnbull

Australia Prime Minister Malcolm Turnbull, shown announcing his new cabinet on Sept. 20, is known for his pro-republic views. (Rob Griffiths/The Associated Press)

Others who received the honours were governors general Quentin Bryce and Peter Cosgrove, former air chief marshal Angus Houston and New South Wales state governor Marie Bashir, which Turnbull has said they will retain.

Queen Elizabeth is Australia's largely ceremonial head of state, but has the power to approve the abolition of parliament, which last happened in the controversial 1975 toppling of Gough Whitlam's government.

Australia's sometimes strained relationship with the British crown came to a head in a 1999 national referendum, when almost 55 per cent of Australians voted against breaking with the monarchy, defeating Turnbull's republicans.

A poll this year for the Australian National University showed that public support for a republic has fallen further since the referendum, while the royals' popularity has risen.

But Turnbull's move into the leadership has buoyed the hopes of republicans eager to revisit the issue in a fresh referendum, despite his ranking of the faltering economy, not the monarchy, as his government's top priority.

Prince Charles and his wife Camilla are expected to receive a warm welcome when they visit Australia and New Zealand next week.