Meaning of “add” - Learner’s Dictionary

add

verb uk us /æd/
PUT WITH [ T ]

A2 to put something with something else:

Add the eggs to the cream.
Could you add apples to your shopping list?
INCREASE [ I, T ]

to increase an amount or level:

Then there's the service charge which adds another ten percent to the bill.
His voice just adds to his appeal.
SAY MORE [ T ]

B1 to say another thing:

[ + that ] She said she liked him but added that he was difficult to work with.
CALCULATE [ T ]

A2 to put two or more numbers or amounts together to get a total

→ See also add insult to injury

(Definition of “add” from the Cambridge Learner’s Dictionary © Cambridge University Press)