— addable, addible , adj. — addedly , adv.
/ad/ , v.t.
1. to unite or join so as to increase the number, quantity, size, or importance: to add two cups of sugar; to add a postscript to her letter; to add insult to injury.
2. to find the sum of (often fol. by up ): Add this column of figures. Add up the grocery bills.
3. to say or write further.
4. to include (usually fol. by in ): Don't forget to add in the tip.
v.i.
5. to perform the arithmetic operation of addition: children learning to add and subtract.
6. to be or serve as an addition (usually fol. by to ): His illness added to the family's troubles.
7. add up ,
a. to make the desired, expected, or correct total: These figures don't add up right.
b. to seem reasonable or consistent; be in harmony or accord: Some aspects of the story didn't add up.
8. add up to , to signify; indicate: The evidence adds up to a case of murder.
n.
9. Journalism. copy added to a completed story.
[ 1325-75; ME adden addere, equiv. to ad- AD- + -dere to put (comb. form; see DO 1 ) ]
Syn. 1. affix, append, attach, adjoin. 2. total, sum.