[add up] vi (1850) 1 a: to come to the expected total "the bill doesn't add up" b: to form an intelligible pattern: make sense "her story just doesn't add up"
2. a: amount 1b--used with to "the play adds up to a lot of laughs" b: to amount to a lot "just a little each time, but it all adds up" ~ vt: to form an opinion of "added him up at a glance"