Anthony Albanese has asked frontbench colleagues to stop branding their opponents "liars", in a concerted new effort by the Labor leader to lift the standard of political discourse.

The move has raised eyebrows in parts of the Labor caucus, with some viewing it as another attempt by the Opposition Leader to distance himself from party's unsuccessful election campaign strategy.

Mr Albanese's office relayed the message to frontbenchers in recent weeks, telling advisors that attacks on the Morrison government should not include references to "lies" or "lying" because the Labor leader was uncomfortable with the aggressive nature of the accusations.

"Their view was it loses its meaning where it's said day-in, day-out," one source told The Sydney Morning Herald and The Age.