back-pedal(The protests have forced the government to back-pedal on the new tax. OALD. Medvedev quickly back-pedaled, writing on Twitter that the half-a-million fine would only apply to drunk drivers. TMT Alexander Demidov)
backtrack(The former Secretary of State is backtracking on comparisons she made between Russia's Crimea involvement and Hitler's invasion of the Sudetenland.4uzhoj)