American Dictionary

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Definition anti- in American English

anti- prefix

prefix
/ænti/
1

opposed to someone or something: used with many nouns and adjectives

Example

antiwar protesters

Synonyms and related words
2

with the opposite qualities or effects: used with some nouns and adjectives

Example

an antihero

Synonyms and related words
3

preventing or curing something: used with some nouns and adjectives

Example

antibacterial

Example

an anti-tetanus injection

Synonyms and related words
Definition anti- in American English