When you add, you join two or more things together. If you add on to your summer cottage, you build an extra room that's connected to your existing house.

If your boss adds ten dollars to your paycheck, she gives you the money in addition to, or on top of, your salary. And when you add a column of numbers, you combine each one in the list until you get a final answer. You might verbally add something by making one last statement: "I'd like to add that I can't wait to visit again!" The Latin root is addere, "add to, join, or attach."

Definitions of add

v 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”
take away, take out
take out or remove
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modify, qualify
add a modifier to a constituent
gild the lily, paint the lily
make unnecessary additions to what is already complete
attach or add
work in
add by mixing or blending on or attaching
add on
make an addition
add as part of something else; put in as part of a set, group, or category
mix, mix in
add as an additional element or part
put on
add to something existing
introduce the butyl group into a chemical compound
put on
add to the odometer
to introduce (a new aspect or element)
put a welt on
insert (days) in a calendar
mark, punctuate
insert punctuation marks into
add by linking or joining so as to form a chain or series
string, string up
add as if on a string
combine, compound
put or add together
add milk to
add nutrients to
provide with or construct with studs
provide with buttons
make wealthy or richer
add as a supplement to what seems insufficient
add an enlivening or altering element to
totalise, totalize
make into a total
to combine or put together again
combine (electronic signals)
synthesise, synthesize
combine so as to form a more complex, product
put quote marks around
feather one's nest
enrich oneself by taking advantage of one's position
vitaminise, vitaminize
add vitamins as a supplement
eke out, fill out
supplement what is thought to be deficient
supplement with leverage
Type of:
become bigger or greater in amount

v make an addition by combining numbers

Add 27 and 49, please!”
add together
add together, add up, sum, sum up, summate, tally, tot, tot up, total, tote up
determine the sum of
deduct, subtract, take off
make a subtraction
foot, foot up
add a column of numbers
Type of:
calculate, cipher, compute, cypher, figure, reckon, work out
make a mathematical calculation or computation

v determine the sum of

Add all the people in this town to those of the neighboring town”
add together, add up, sum, sum up, summate, tally, tot, tot up, total, tote up
add together
make an addition by combining numbers
Type of:
count, enumerate, number, numerate
determine the number or amount of

v constitute an addition

“This paper will add to her reputation”
Type of:
constitute, form, make
to compose or represent:"This wall forms the background of the stage setting"

v bestow a quality on

“The music added a lot to the play”
“This adds a light note to the program”
bestow, bring, contribute, impart, lend
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be a contributing factor
instill, transfuse
impart gradually
impart a cheap brightness to
throw in
add as an extra or as a gratuity
impart as if by breathing
Type of:
alter, change, modify
cause to change; make different; cause a transformation

v state or say further

append, supply
insert, slip in, sneak in, stick in
insert casually
toss in
add casually to a conversation
interpolate or insert (words) into a sentence or story
Type of:
say, state, tell
express in words

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