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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 to the reasons Mr. Fryer cites, I’ve observed parents starting to believe that we’re in a “winner-takes-all” society in which there are “winners” and “losers.”

From The Wall Street Journal • May 11, 2026

In addition, three people have died, with two of those confirmed as having hantavirus and one probable case, the WHO said.

From Barron's • May 11, 2026

In addition, the report says healthcare professionals should encourage patients to reduce UPF consumption alongside standard advice about exercise, smoking, alcohol use, and overall nutrition.

From Science Daily • May 10, 2026

Ticket touting - This draft legislation would cap the service fees charged by resale platforms to stop price limits being undermined by the addition of hidden costs.

From BBC • May 10, 2026

In addition, more than sixty million people around the world sat glued to their television sets staring at the same scene.

From "Shipwrecked!" by Martin W. Sandler

Vocabulary lists containing addition

Arithmetic

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List 1

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The Number System

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