infectious

adjective
UK: /ɪnˈfek.ʃəs/
US: /ɪnˈfek.ʃəs/

  1. Able to spread quickly to other people.

    1. The flu is very infectious, so stay home.
    2. Her laugh was so infectious that soon everyone was giggling along with her.

  2. Caused by infection.

    1. This disease is infectious, keep your distance.
    2. The doctor confirmed that his cough was due to an infectious agent and prescribed antibiotics.

  3. Likely to spread or influence others.

    1. Her enthusiasm is infectious and motivating.
    2. The leader's positive attitude was infectious, boosting the team's morale significantly.

Synonyms

contagious catching communicable viral

Frequently Asked Questions

The word "infectious" in English means: Able to spread quickly to other people., Caused by infection., Likely to spread or influence others..

The phonetic transcription of "infectious" is /ɪnˈfek.ʃəs/ in British English and /ɪnˈfek.ʃəs/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "infectious": contagious, catching, communicable, viral.

Example usage of "infectious": "The flu is very infectious, so stay home.". More examples on the page.