informal

to go somewhere or do something very quickly.

He was going hell for leather to get to the supermarket before it closed.

• in the altogether
• in the back of beyond
• in the back of mind
• in the back of your mind
• in the bag
• in the ballpark
• in the bargain
• in the black
• in the blink of an eye
• in the bosom of
• in the bosom of someone
• in the bosom of something
• in the buff
• in the business of
• in the business of doing something
• in the can
• in the cards
• in the catbird seat
• in the clear
• in the closet
• in the cold light of day
• in the cross hairs
• in the dead of night
• in the dead of the night
• in the dead of winter