Addition synonyms such as computation, adding in, accompaniment, adding up, and calculation. Addition is a noun, and its antonyms are subtraction and removal. Additionally, here are 29 synonyms and nearby words for addition as well as words beginning with
A, and Ad.
29 synonyms for addition
1. adding
adding in
incorporation
insertion
2. adjunct
accompaniment
add-on
addendum
adjunct
appendage
augmentation
increment
rider
supplement
3. totalling
adding up
calculation
casting up
computation
counting
reckoning
summation
tallying
totalling
totting up