infectious

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. adjective caused by infection or capable of causing infection
  2. adjective easily spread; - Bertrand Russell
  3. adjective of or relating to infection

Etymology

Borrowed from New Latin īnfectiōsus. By surface analysis, infect + -ious.

In classic literature

Synonyms

infective

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