Find Synonyms
addition Synonyms
Another word for addition
Choosing another word for addition depends on context, so the 18 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
• noun (Context 1)
The action or process of adding something to something else.
Usage Example
"The sauce was greatly improved by the inclusion of fresh herbs and garlic."
Strongest
inclusion
Strong
incorporation
introduction
insertion
supplementation
annexation
• noun (Context 2)
A person or thing added to a group, collection, or existing structure, such as a new room or wing built onto a building.
Usage Example
"The new graphic designer is a welcome supplement to our creative team."
Strongest
supplement
Strong
add-on
extension
annex
adjunct
accession
acquisition
wing
• noun (Context 3)
The basic arithmetic operation of calculating the total of two or more numbers or amounts.
Usage Example
"First-grade students spend significant time practicing basic summation and subtraction."
Strong
summation
totalling
totaling
tallying
Opposites of addition
The opposite of addition shifts depending on context. Common opposites include:
subtraction
removal
omission
exclusion
elimination
deduction
deletion
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Addition. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/addition