Infectious

Last Updated: January 2, 2026 at 12:30 PM

Scrabble:15 ptsWWF:18 pts10 letters

Definition of Infectious

adjective

  1. (of an illness) Transmitted from one person to another, usually through the air breathed.

    "Cancer is not infectious."

  2. (of a person) Able to infect others.

    "Despite feeling better, the patient is still infectious."

  3. (of feelings and behaviour) Spreading quickly from one person to another.

    "Her enthusiasm for work can be really infectious."

  4. Memorable and invoking excitement or interest.

    "Pop music is more infectious than elevator music."

Synonyms & Antonyms

SYNONYMS

contagiouscatchycatching

ANTONYMS

non-infectiousnoninfectious