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Showing results for addition. Search instead for additivtank.
Definitions

addition

[uh-dish-uhn] / əˈdɪʃ ən /
NOUN
process of conjoining, adding
Synonyms
STRONGEST
extension inclusion
STRONG
accession annexation attachment augmentation enlargement
WEAK
adding adjoining affixing increasing
Antonyms
STRONG
decrease
WEAK
deduction lessening loss reduction shrinkage subtraction withdrawal
NOUN
something conjoined to or enlargement of something
Synonyms
STRONGEST
bonus boost enhancement expansion extension supplement
STRONG
accession accessory accretion accrual addendum additive adjunct aggrandizement annex appendage appendix attachment augmentation commission dividend enlargement extra gain hike increase increment markup option profit raise reinforcement rise wing
Antonyms
STRONGEST
decrease
STRONG
decline drop fall lessening loss reduction shrinkage subtraction
WEAK
deduction withdrawal
NOUN
arithmetical process of augmentation
Synonyms
STRONG
accretion computing counting reckoning summation
WEAK
accruing adding enlarging expanding increasing summing tabulating totaling toting
Antonyms
WEAK
decrease deduction lessening loss reduction shrinkage subtraction withdrawal

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In addition, the factors contributing to the lower unemployment rate aren’t so cheery.

From Slate • Apr. 3, 2026

Ethics, by contrast, relate more to standards, rules and guidelines, in addition to one’s personal comfort level.

From MarketWatch • Apr. 3, 2026

In addition, immune cells in these participants produced fewer inflammatory signals.

From Science Daily • Apr. 3, 2026

The 3.5% surcharge will be applied to fulfillment by Amazon service in the U.S. and Canada, in addition to remote fulfillment shipping from the U.S. to Canada, Mexico, and Brazil.

From Barron's • Apr. 2, 2026

Maybe he was deaf in addition to being crazy.

From Full of Beans by Jennifer L. Holm

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.