Foreign Minister Julie Bishop has denied labeling MP Tanya Plibersek a “b--ch” during question time in parliament on Tuesday.

In the video Ms Bishop appears to slur Ms Plibersek as the latter frequently interjects an address from Prime Minister Tony Abbott on the Syria refugee crisis.

View photos Tanya Plibersek. Photo: Supplied More

South Australian Labor MP Nick Champion has said the video confirms Ms Bishop’s foul language, which a spokeswoman for the deputy liberal leader refused to further comment on.

View photos Julie Bishop. Photo: Supplied More

“It sure seems the case to me. You know, the footage is the footage,” Mr Champion said

“We await the Foreign Minister to clarify what she said.”

Ms Plibersek twice interrupted Mr Abbott as he alluded to the number of Syrian refugees his government planned to take in, in response to her question on why the government's financial support had been reduced.