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

Because FeLV can be contagious to other cats, Bruce will need to be the only kitty in his new home. — Arizona Republic, AZCentral.com, 11 Sep. 2026

Measles is a highly contagious airborne disease that causes fever, respiratory symptoms and a characteristic rash. — Julhas Alam, Arkansas Online, 10 Sep. 2026

City officials are warning of a possible measles exposure at Union Station after someone with the highly contagious illness passed through the West Loop hub late last month. — Tess Kenny, Chicago Tribune, 10 Sep. 2026

The confidence is contagious, prompting Lupoi to take the tarps off at Memorial Stadium for the first time in several years and allow thousands more tickets to be sold for the highly anticipated opener against UCLA. — Joaquin Ruiz, Los Angeles Times, 4 Sep. 2026

Phrases Containing contagious

• contagious disease