high gear noun
in/into high gear
: in or into a state of great or intense activity
▪ The project is now in high gear. [=(Brit) top gear] ▪ Fuel prices are expected to rise as the summer travel season kicks/moves into high gear.
▪ The project is now in high gear. [=(Brit) top gear] ▪ Fuel prices are expected to rise as the summer travel season kicks/moves into high gear.
