verb (used with object)
verb (used without object)
- to make the desired, expected, or correct total: These figures don't add up right.
- to seem reasonable or consistent; be in harmony or accord: Some aspects of the story didn't add up.
Origin of add
British Dictionary definitions for add up (1 of 3)
British Dictionary definitions for add up (2 of 3)
Word Origin for add
British Dictionary definitions for add up (3 of 3)
Word Origin and History for add up
late 14c., "to join or unite (something to something else)," from Latin addere "add to, join, attach, place upon," from ad- "to" (see ad-) + -dere comb. form meaning "to put, place," from dare "to give" (see date (n.1)). Meaning "to do sums, do addition" also is from late 14c. Related: Added; adding. To add up "make sense" is from 1942.
Medicine definitions for add up
Science definitions for add up
Idioms and Phrases with add up
Amount to an expected or correct total, as in These figures don't add up, meaning they are not correct. [Mid-1800s]
Be consistent, make sense, as in I'm not sure that all this testimony will add up. [First half of 1900s]
Assess, form an opinion of, as in He looked across the track and added up the competition. Also see add up to.