Do a number on someone

Meaning: To harm, deceive, or negatively affect someone, either physically, emotionally, or mentally. It can also mean to harshly criticize or ridicule someone.

Usage in Example Sentences:

  1. “The breakup really did a number on her—she’s been feeling down for weeks.”
  2. “He twisted his ankle during the game, and it did a number on his ability to play.”
  3. “The critics did a number on the new movie, calling it a complete disaster.”

Origin:
The origin of this phrase is uncertain, but it became popular in American slang in the mid-20th century. It may relate to the idea of “numbering” someone, as in marking them for harm or ridicule, or performing a metaphorical act that leaves a lasting effect.

Do a number on someone

Get under someone’s skin

Meaning: To deeply irritate, annoy, or provoke someone, or alternatively, to strongly affect someone emotionally, often in a way they can’t ignore.

Usage in Example Sentences:

  1. “Her constant interruptions really get under my skin during meetings.”
  2. “That catchy tune has gotten under my skin—I can’t stop humming it!”
  3. “Despite his tough exterior, her kindness got under his skin, and he started to open up.”

Origin:
The phrase likely originated as a metaphor for something causing discomfort, much like an insect or object physically under the skin. Over time, it came to symbolize emotional or mental irritation. The idiom gained broader use in literature and conversation by the mid-20th century.

Get under someone's skin

Hot under the collar

Meaning: To feel angry, annoyed, or agitated, often in a way that’s visible or difficult to hide.

Usage in Example Sentences:

  1. “She got hot under the collar when her coworker took credit for her idea.”
  2. “You don’t need to get hot under the collar about the delay; we’ll resolve it soon.”
  3. “He tends to get hot under the collar whenever someone criticizes his work.”

Origin:
The phrase refers to the physical sensation of heat or discomfort around the neck that often accompanies anger or frustration. Historically, people wore high-collared shirts, and the idea of someone getting “hot” under such a collar visually conveys their irritation or anger. It has been used in English since the late 19th century.

Hot under the collar

A Tough nut to crack

Meaning: A difficult problem to solve, a challenging situation to handle, or a person who is hard to understand or convince.

Usage in Example Sentences:

  1. “Convincing him to join the team will be a tough nut to crack—he’s very stubborn.”
  2. “This math problem is a tough nut to crack; I’ve been working on it for hours.”
  3. “She’s a tough nut to crack, but once you get to know her, she’s really friendly.”

Origin:
The phrase comes from the literal difficulty of cracking certain types of nuts with a hard shell, like walnuts or pecans. It has been used metaphorically since the 1800s to describe situations or people that require effort and persistence to overcome or understand.

A Tough nut to crack

Rub someone up the wrong way

Meaning: To irritate, annoy, or upset someone, often unintentionally, by doing or saying something they dislike.

Usage in Example Sentences:

  1. “Her sarcastic comments rubbed him up the wrong way during the meeting.”
  2. “He tends to rub people up the wrong way with his blunt remarks.”
  3. “I didn’t mean to rub you up the wrong way—I was just trying to help.”

Origin:
This idiom comes from the imagery of stroking a cat’s fur in the opposite direction of its natural grain, which can make the animal uncomfortable and irritated. First used in the 19th century, it has since been applied metaphorically to describe interactions that cause annoyance or friction in people.

Rub someone up the wrong way

Left and right

Meaning: Happening frequently, abundantly, or in all directions; doing something extensively or indiscriminately.

Usage in Example Sentences:

  1. “After the storm, people were helping each other left and right to rebuild the community.”
  2. “He’s been spending money left and right without thinking about the consequences.”
  3. “During the promotion, customers were buying products left and right.”

Origin:
This phrase comes from the idea of something being spread or distributed in all directions, particularly the two primary directions of left and right. It emphasizes the volume or frequency of an action or event. Its exact origin is unclear, but it became common in English in the 19th century.

left, right, and centre

Below the belt

Meaning: To act unfairly or cruelly, often by attacking someone in a way that’s considered unethical or inappropriate.

Usage in Example Sentences:

  1. “That comment about her personal life was really below the belt.”
  2. “I know you’re upset, but going below the belt won’t help your case.”
  3. “Criticizing his work in front of everyone was hitting below the belt.”

Origin: This idiom comes from boxing, where hitting “below the belt” (the waist) is against the rules and is considered an unfair move. Over time, it became a metaphor for unfair tactics or hurtful remarks in any situation, not just physical confrontations.

Below the belt

Go off the rails

Meaning: To act in an uncontrolled, chaotic, or unmanageable manner; to lose control over one’s behavior or actions.

Usage in Example Sentences:

  1. “After his business failed, he started drinking heavily and went off the rails.”
  2. “The project was going well until the last few weeks, when everything seemed to go off the rails.”
  3. “Her behavior in class has gone off the rails recently.”

Origin: This idiom is rooted in the railway industry. When a train “goes off the rails,” it literally leaves the tracks, which causes a loss of direction and control. Over time, the phrase evolved to describe people or situations that lose structure or stability, becoming chaotic or erratic.

Go off the rails

Keep something under one’s hat

Meaning: To keep something a secret or to not reveal information.

Usage in Example Sentences:

  1. “I have a new job offer, but I’m keeping it under my hat until everything is finalized.”
  2. “He found out some surprising news but promised to keep it under his hat.”
  3. “She’s planning a big surprise party, so keep it under your hat!”

Origin: This idiom is thought to have originated in England in the 19th century. Hats were often used to conceal objects, and the phrase came to metaphorically mean keeping information hidden or not revealing it. The hat acts as a symbol for discretion and secrecy.

Keep something under one's hat

Pick up the pieces

Meaning: To restore or rebuild something after a failure, setback, or emotional distress; to regain stability after a difficult situation.

Usage in Example Sentences:

  1. “After the company went bankrupt, he stayed to help pick up the pieces and rebuild.”
  2. “She took time to pick up the pieces after her difficult breakup.”
  3. “Once the storm passed, the community came together to pick up the pieces.”

Origin: The idiom likely originates from the literal act of collecting pieces after something has broken. Over time, it evolved to describe the process of emotionally or practically recovering from any significant disruption or hardship.

Pick up the pieces