English

Verb

add up ‎(third-person singular simple present adds up, present participle adding up, simple past and past participle added up)

1. (transitive) To take a sum.

   Add up the prices and find out how much it will cost.

2. (intransitive) To accumulate; to amount to.

   If you can save even a couple of dollars per day, it will add up to a lot over a year.

3. (idiomatic, intransitive) To make sense; to be reasonable or consistent.

   His story just doesn't add up. Why would he have been at the restaurant the day before the event?