start in on sb Meaning, Examples & How to Use the Phrasal Verb

What Does โ€œstart in on sbโ€ Mean?

โ€œStart in on sbโ€ means to begin criticizing, attacking, or complaining about someone, often suddenly or aggressively.

Introduction

The phrasal verb start in on sb is commonly used in everyday English to describe when someone begins to argue with or criticize another person. It often implies a sudden or intense action, like launching into a verbal attack or complaint. Understanding the start in on sb meaning helps learners recognize when someone is being confronted or challenged in conversation. This phrase is useful in many social and professional contexts, especially when describing conflicts or disagreements.

Quick Info Box

  • Phrasal verb: start in on somebody
  • Type: transitive
  • Level: B2
  • Short meaning: to begin criticizing or attacking someone

Structure (Grammar Rules)

The phrasal verb start in on sb is inseparable. This means you cannot put the object between the verb and the particle.

Correct pattern: start in on + somebody

Incorrect pattern: start + somebody + in on

How to Use start in on sb?

Use start in on sb when you want to say someone begins to criticize or argue with another person. It usually shows the start of an unpleasant or aggressive conversation. You can use it in past, present, or future tense.

Example: She started in on him about the missed deadline.

Examples

Imagine a situation where a teacher is upset with a student. You might say:

  • When the student arrived late, the teacher started in on him immediately.
  • He didnโ€™t expect his boss to start in on him about his work performance.
  • She started in on her brother for breaking the vase.
  • They started in on the new policy during the meeting.
  • Donโ€™t let him start in on you; just stay calm.

Here is start in on sb in a sentence: โ€œThe coach started in on the players after their poor performance.โ€

Common Mistakes

People often confuse the word order or use the wrong preposition. For example:

  • Incorrect: She started on him in.
  • Correct: She started in on him.

Another mistake is separating the verb and the preposition:

  • Incorrect: He started him in on.
  • Correct: He started in on him.

Differences / Synonyms

Start in on sb is similar to pick on sb or go after sb, but there are differences:

  • Pick on sb: To bully or tease repeatedly.
  • Go after sb: To pursue or attack someone physically or verbally.
  • Start in on sb: To begin criticizing or attacking suddenly, often verbally.

While pick on suggests ongoing behavior, start in on focuses on the moment the criticism or attack begins.

Common Collocations

When using start in on sb, it often pairs with words that indicate the topic or reason for the attack. Common collocations include:

  • start in on sb about (a topic or issue)
  • start in on sb for (a specific fault or mistake)
  • start in on sb regarding (a subject or concern)

Examples:

  • She started in on him about his bad behavior.
  • They started in on her for missing the meeting.
  • He started in on me regarding the project delay.

Related Phrasal Verbs

Here are related phrasal verbs of start in on sb:

Real-life Dialogue

Here is a natural conversation using start in on sb:

Anna: Did you hear what happened at the office?

Ben: No, what?

Anna: The manager started in on John about the report being late.

Ben: Oh, that must have been tough.

Practice

Try to complete the sentence with the correct phrase:

When the teacher saw the messy room, she __________ the students immediately.

  • a) started in on
  • b) started on in
  • c) started the in on

Correct answer: a) started in on

FAQ

  • Q: Can โ€œstart in on sbโ€ be used in formal writing?
    A: It is more common in spoken and informal English.
  • Q: Is โ€œstart in on sbโ€ always negative?
    A: Usually, yes, because it implies criticism or attack.
  • Q: Can I replace โ€œsbโ€ with a name?
    A: Yes, for example, โ€œstart in on John.โ€
  • Q: Is โ€œstart in onโ€ separable?
    A: No, it is inseparable.
  • Q: What is the difference between โ€œstart in onโ€ and โ€œpick onโ€?
    A: โ€œStart in onโ€ means to begin criticizing suddenly; โ€œpick onโ€ means to bully repeatedly.

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