add up

Definition of add up in English English dictionary: 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?.; 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.; To take a sum
Add up the prices and find out how much it will cost.; add up in number or quantity; "The bills amounted to $2,000"; "The bill came to $2,000"; If small amounts of something add up, they gradually increase. Even small savings can add up; If facts or events do not add up, they make you confused about a situation because they do not seem to be consistent. If something that someone has said or done adds up, it is reasonable and sensible. Police said they arrested Olivia because her statements did not add up; be reasonable or logical or comprehensible; have a sum of, sum up; make sense, form an understandable conclusion; see add 2; develop into; "This idea will never amount to anything"; "nothing came of his grandiose plans"; determine the sum of; "Add all the people in this town to those of the neighboring town"
add up to: be rational or logical, be understandable; develop into; add up in number add up in quantity
add up to: If amounts add up to a particular total, they result in that total when they are put together. For a hit show, profits can add up to millions of dollars. = amount to