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1. Make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of
   "We added two students to that dorm room"; "She added a personal note to her letter"; "Add insult to injury"; "Add some extra plates to the dinner table"
    
2. State or say further
   "'It doesn't matter,' he added";
   - append, supply
    
3. Provide a particular quality or character
   "The music added a lot to the play"; "This adds a light note to the program";
   - lend, impart, bestow, contribute, bring
    
4. (arithmetic) make an addition by combining numbers
   "Add 27 and 49, please!"; "add together 27 and 49, please!";
   - add together
    
5. Determine the sum of
   "Add all the people in this town to those of the neighbouring town"; "add together all the people in this town to those of the neighbouring town"; "add up all the people in this town to those of the neighbouring town";
   - total, tot, tot up, sum, sum up, summate, tote up, add together, tally, add up
    
6. Constitute an addition
   "This paper will add to her reputation"

1. A condition (mostly in boys) characterized by behavioral and learning disorders
   - attention deficit disorder, attention deficit hyperactivity disorder, ADHD, hyperkinetic syndrome, minimal brain dysfunction, minimal brain damage, MBD

Sounds like: ad

Derived forms: added, adds, adding

See also: number

Type of: alter, calculate, change, cipher, compute, constitute, count, cypher, enumerate, figure [N. Amer], form, increase, make, modify, number, numerate, reckon, say, state, syndrome, tell, work out

Antonym: take off, take out

Encyclopedia: Add