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
Synonyms for add
Word Origin for add
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.