A Liberal MNA has apologized to Premier Pauline Marois after a heady, insult-filled session in the National Assembly.

Christine St-Pierre said she was sorry for the rude language she used during Tuesday's session, when opposition MNAs were criticizing the Parti Quebecois government for political interference.

The Liberals, led by St-Pierre, were questioning the PQ over the government's appointment of four new members to the Council for the Status of Women last week in an apparent bid to squelch criticism of the PQ's Charter of Quebec Values.

The exact nature of the insult St-Pierre uttered was not clearly heard on the debating room's microphones, but either she called Marois a cow, or used a term that can be roughly translated as 'piss off.'

St-Pierre was prudent enough not to repeat herself when she apologized.

St-Pierre has, herself been in PQ sights because of her actions when, as Minister for the Status for Women in 2011, she named the then-head of the Council for the Status of Women, Christine Pelchat, as a diplomat to Mexico.