Synonyms of contagious

contagious

adjective

kən-ˈtā-jəs 

1

as in infectious

capable of being passed by physical contact from one person to another

chicken pox, measles, German measles, and other contagious diseases

Synonyms & Similar Words

• infectious
• infective
• communicable
• transmissible
• catching
• transmittable
• pestilent

Antonyms & Near Antonyms

• noninfectious
• noncommunicable

2

as in spreading

exciting a similar feeling or reaction in others

the enthusiasm of the new club members was contagious

Synonyms & Similar Words

• infectious
• spreading
• epidemic
• catching
• tangible
• irresistible
• perceptible
• overwhelming
• overpowering
• palpable
• winning
• endearing
• inviting
• fetching
• disarming
• winsome

Example Sentences

Recent Examples of contagious

Over the past quarter century, the powerful, highly contagious form of avian influenza that hit Universal Ostrich Farms has spread from poultry to wild bird populations around the globe. — J. B. MacKinnon, Harpers Magazine, 22 Sep. 2026

People are generally most contagious during the first three days of illness. — Angela Rodriguez, Sacbee.com, 22 Sep. 2026

Measles is a highly contagious virus that can be fatal in one to three patients per 1,000 cases, data shows. — Angelica Stabile, FOXNews.com, 22 Sep. 2026

This sense of personal connection is contagious, flowing from the team to the guests. — Jess Hoffert, Midwest Living, 22 Sep. 2026

Phrases Containing contagious

• contagious disease