contagious

/kənˈteɪdʒəs/

Proposed by a contributor, not yet supported by evidence.

Sense 1

Meaning · English

Easily transmitted to others.

Adjective

Examples

Last year's flu strain was so contagious that everybody in town got sick!

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 2

Meaning · English

Easily passed on to others.

Adjective

Examples

contagious enthusiasm; infectious laughter

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Common questions

What does “contagious” mean?

Easily transmitted to others.

Is “contagious” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.