"Our mandate is price stability and we have to deliver on that using all the tools we have available," Lagarde told Latvian news outlet Delfi, largely repeating last week's policy message. "We are determined to do what is necessary to bring inflation back to our 2% target."

The ECB has raised interest rates by a combined 200 basis points over the past three meetings, and markets are pricing in a string of further moves that would take the 1.5% deposit rate close to 3% in 2023.

"The destination is clear, and we are not there yet," Lagarde said without specifying where rate hikes might end. "We will have further rate increases in the future."

Inflation rose to 10.7% in October and is expected to stay above the ECB's 2% target through 2024, raising the risk that businesses and households start adjusting their behaviour as they lose trust in the ECB's willingness to get it back down.

"The longer inflation stays at such high levels, the greater the risk that it spreads throughout the economy," Lagarde said.

(Reporting by Balazs Koranyi; Editing by Andrew Heavens)