add up to

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add up to

To equal or amount to something. The cash in the drawer doesn't add up to the amount of sales we made today. These new details do not add up to the story the witnesses told us.
See also: add, up

up to no good

Engaging in malicious or nefarious behavior. Primarily heard in UK, Australia. I'm worried that my daughter's boyfriend is up to no good—he always seems to be involved in some bizarre scheme. What are you boys whispering about? You're up to no good, aren't you?
See also: good, up

up to no good

Fig. doing something bad. I could tell from the look on Tom's face that he was up to no good. There are three boys in the front yard. I don't know what they are doing, but I think they are up to no good.
See also: good, up

add up to

Amount to, signify, as in The smooth airline connections, luxury hotel, and fine weather added up to the best vacation we'd ever had . [Early 1900s] Also see add up.
See also: add, up

add up to

To constitute; amount to: The revisions added up to a lot of work.
See also: add, up