add up

phrasal verb·2 senses·particle up

Meanings

1

Combine into a larger total

Why “up”? Filling to the top. Reaching the upper limit means finishing.

Those numbers don't add up.
Those numbers don't total to what they should.
The receipts add up to 90 euros.
The receipts make a total of 90 euros.
2

Make sense or seem true

Why “up”? You bring the whole thing into view, then judge its value.

His story doesn't add up.
His story does not make sense.
The two emails don't add up.
The two emails do not match, so something seems wrong.

Test yourself

Those numbers don't add up. What does it mean?

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