Phrasal verb: To Add Up

Add up (Phrasal Verb)

Meaning: Add up in American English is an expression used for casual conversations that means to make sense or to be reasonable. We usually use this phrasal verb in a negative sentence = "doesn't add up."

  • If something adds up, it makes sense. It is probable or correct.
  • If something doesn't add up, it doesn't make sense or it is unreasonable.

Take a look at this sentence:

"Her story didn't add up, I think she's lying."

What do you think this phrasal verb means here? You can guess the meaning of this phrase based on the sentence. 

"Her story didn't add up" here means it didn't make sense. Something about it seemed not logical or strange, it didn't add up.

Another way of saying "Her story didn't add up" is:

"Her story doesn't make sense."


Example Dialogue


Student: "I'm sorry, I don't have my homework finished because I got into a car accident last night, and I had to go visit my grandmother in the hospital. And then I've lost my homework. It was eaten by the dog."

Teacher: "Oh, your story doesn't add up. I think you're lying. You just didn't do your homework."

  • This story seems unbelievable, so the teacher thinks the student's story doesn't make sense, it's not logical, so it doesn't add up.


Example Sentences

  • His theory doesn't add up. 'I don't think he did enough research'.
  • My brother’s home is twice the size of mine. He's thinking about getting a bigger house. He is single and lives alone. It doesn’t add up.
  • She says she is working a lot of overtime, but she never has any money. It doesn’t add up.


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