add

add /ˈæd/ verb
adds; added; adding
add
/ˈæd/
verb
adds; added; adding
Britannica Dictionary definition of ADD
1 
[+ object]
a  : to put (something) with another thing or group of things
b  : to mix or combine (an ingredient) with other ingredients
c  : to include (something) with something else
2 
[+ object] : to cause something to have (a usually good quality or characteristic)
3 
: to put (two or more numbers or amounts) together to find a total or sum
[+ object]
[no object]
— opposite subtract
4 
[+ object] : to say or write (something more or extra)

add insult to injury

— see 2insult

add on

[phrasal verb]
add (something) on or add on (something)
: to put (something) with another thing or group of things — often + to
◊ The phrase add on to is also written as add onto.

add to

[phrasal verb]
add to (something)
: to make (something) larger, better, or greater
◊ Phrases like add to this/that and added to this/that are often used informally to introduce a statement about something that makes a thing or situation better, worse, more important, etc.

add up

[phrasal verb]
1 
a  : to be added together and equal the expected or correct total — usually used in negative constructions
b  : to make sense : to seem to be logical or true
c  : to slowly increase and become a large number or amount
2 
add (something) up or add up (something) : to put together or count (the number or amount of something) to find the total
3 
add up to (something)
a  : to have (a number) as a total
b  : to produce (a specified result)

— added

adjective