What Does โSign off on sthโ Mean?
โSign off on sthโ means to officially approve or agree to something, often by giving a signature or formal confirmation.
Introduction
The phrase โsign off on sthโ is commonly used in professional and everyday English to indicate giving formal approval or consent. When someone signs off on a document, plan, or project, they are confirming that they agree with it and allow it to proceed. Understanding the โsign off on sth meaningโ helps learners use this expression correctly, especially in business or official contexts. It is a useful phrasal verb that shows authority and responsibility in decision-making.
Quick Info Box
- Phrasal verb: sign off on something
- Type: transitive
- Level: B2
- Short meaning: to officially approve or agree to something
Structure (Grammar Rules)
โSign off on sthโ is a separable phrasal verb. The object (something) comes after โsign off on.โ
Structure patterns:
- Subject + sign off on + object (noun/pronoun)
- Example: The manager signed off on the report.
Note: You cannot separate โsign offโ and โonโ because โonโ is a fixed preposition in this phrase.
How to Use Sign off on sth?
Use โsign off on sthโ when you want to say someone officially approves or agrees to a plan, document, or idea. It is often used in business, legal, or formal settings but can also appear in everyday speech.
Common contexts include:
- Approving budgets or expenses
- Agreeing to project plans
- Confirming documents or reports
Examples
When working in a company, you might hear: โThe director needs to sign off on the contract before we proceed.โ
- She signed off on the budget yesterday.
- We canโt start the project until the client signs off on the proposal.
- The CEO signed off on the new marketing strategy.
- Before launching the product, the team leader must sign off on the final design.
- The manager refused to sign off on the report due to missing data.
These examples show how โsign off on sth in a sentenceโ means giving formal approval.
Common Mistakes
People sometimes confuse โsign offโ with other phrasal verbs or use it incorrectly:
- Incorrect: She signed on the contract.
- Correct: She signed off on the contract.
- Incorrect: The manager signed the report off.
- Correct: The manager signed off on the report.
Remember, โsign off onโ must be followed by the object directly after โon.โ
Differences / Synonyms
Similar phrases include:
- Approve: More general, can be formal or informal.
- Sign off: Specifically means giving formal approval, often with a signature.
- Authorize: To give official permission, often used in legal or official contexts.
While โapproveโ can be verbal or informal, โsign off on sthโ implies a formal or official confirmation.
Common Collocations
We often โsign off onโ specific things in professional settings. Common collocations include:
- Contract: A legal agreement.
- Budget: A financial plan.
- Project: A planned set of tasks.
- Report: A formal document.
- Proposal: A suggested plan or idea.
Related Phrasal Verbs
Here are related phrasal verbs of sign off on sth:
Real-life Dialogue
Here is a short conversation between colleagues:
Anna: Have you signed off on the new budget yet?
Mark: Not yet. I want to review the numbers one more time.
Anna: Okay, but we need approval soon to start the project.
Mark: Iโll sign off on it by tomorrow.
Practice
Complete the sentence with the correct form of โsign off onโ:
Before launching the campaign, the manager must ______ the final plan.
- a) signed off on
- b) sign off on
- c) signing off on
- d) sign off
Answer: b) sign off on
FAQ
- Q: Can โsign off onโ be used in informal situations?
A: It is mainly formal but can be used informally when talking about approval.
- Q: Is โsign off onโ separable?
A: No, you cannot separate โsign offโ and โon.โ
- Q: What is the difference between โsign offโ and โsign off onโ?
A: โSign offโ alone can mean finishing or ending something; โsign off onโ means approving something.
- Q: Can I use โsign off onโ with pronouns?
A: Yes, for example, โHe signed off on it.โ
- Q: What types of documents can you sign off on?
A: Contracts, budgets, reports, proposals, and plans are common examples.

