Find Synonyms

infectious Synonyms

Another word for infectious

Choosing another word for infectious depends on context, so the synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

(Of a disease or disease-causing organism) likely to be transmitted to people, organisms, etc., through the environment.

Usage Example

"Measles is a highly communicable viral illness that can be prevented through vaccination."

Strongest
communicable
transmissible
contagious
Strong
catching
pestilent

• adjective (Context 2)

Likely to spread quickly and influence or affect others in an irresistible way (especially of an emotion, mood, or laugh).

Usage Example

"Her contagious enthusiasm for the project soon inspired the entire research team."

Strongest
contagious
catching
Strong
irresistible
compelling
captivating

Opposites of infectious

The opposite of infectious shifts depending on context. Common opposites include:

noninfectious
noncommunicable
noncontagious
uninspiring
dull
See all opposites of infectious

• Nearby Words

infeasible
infect
infection
infectious
infectiously
infectiousness
infective

Cite this Entry

Wordmom. (2026). Synonyms for Infectious. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/infectious
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