add up

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 the sum of; to total.
   • Add up the prices and find out how much it will cost.
   • When they added up the vaccine doses from all known and anticipate sources, they didn't have enough.

   Synonyms:

   sum up, tally

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.
   • It all keeps adding up / I think I'm cracking up / Am I just paranoid? / Or am I just stoned?1994, Green Day, “Basket Case”, in Dookie

   Synonyms:

   accrue, mount up

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?
   • Phoenix: (Hmm... Something just isn't adding up here. I wonder, who they really saw?)2007 March 16, Capcom Production Studio 4, Phoenix Wright: Ace Attorney – Justice for All, Europe: Capcom, →OCLC, Nintendo DS, scene: Part 3: Investigation, Circus Entrance, level/area: Turnabout Big...

   Synonyms:

   compute, hang together, check out, make sense, track, figure