put a rocket under (someone)

British & Australian

to do something to make someone hurry.

We're going to have to put a rocket under Tim if we want to catch that train.

• a good egg
• a good-for-nothing
• a good many
• a good Samaritan
• a goody-goody
• a Gordian knot
• a grab bag
• a grain of truth
• a grass widow
• a greasy spoon
• a great deal
• a great deal of
• a great deal of something
• agree to disagree
• a grey area
• a grin like a Cheshire cat
• a guiding light
• a guiding spirit
• a guilt trip
• a guinea pig
• a gut-bucket
• a gut feeling
• a gut reaction
• a hair out of place
• a hair's breadth