set out
To leave on a journey or voyage.
The Pilgrims set out for the New World.
We set out for the top of the mountain at dawn. Unfortunately, as we set off, it started to snow heavily, so we decided to head out again later.
To decide and begin to try; attempt.
George set out to improve his pitching.
We set out to paint the house in one day, but quickly realized that it would be impossible to do so.
Janet set out to compete for the large scholarship grant by writing a good essay.
To arrange or display neatly; to plant in the ground.
The gardener set out some tomato seedlings.
The children tried to set out the dishes on the table, but their dad had to help to lay the dishes out properly.
settle a score
wipe out an old score
To hurt (someone) in return for a wrong or loss.
John settled an old score with Bob by beating him.
shape up or ship out
To either improve one's disposition or behavior, or quit or leave.
When Paul neglected to carry out his part of the research work that Professor Brown had assigned him with for the fifth time, the professor cried, "Shape up, or ship out, Paul. I have lost my patience with you!"
shell out
To pay or spend.
Dick had to shell out a lot of money for his new car.
ship out
To begin a journey; leave.
The army group shipped out for the Far East today.
shoot off one's mouth
shoot off one's face
To give opinions without knowing all the facts; talk as if you know everything.
Tom has never been to Florida, but he's always shooting his mouth off about how superior Florida is to California.
I want to study the problem before I shoot off my face.
The editor of the newspaper is always shooting his mouth off about the trouble in Africa.
shoot out
To fight with guns until one person or side is wounded or killed; settle a fight by shooting. Used with it.
The cornered bank robbers decided to shoot it out with the police.
The moment she opened the door, the cat shot out and ran around the house.
During the last half-minute of the race, Dick shot out in front of the other runners.
shout down
To object loudly to; defeat by shouting.
Grace suggested that we give our club money to charity, but she was shouted down.
The crowd shouted down the Mayor's suggestions.