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contagious - definition and synonyms

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adjective     contagious pronunciation in British English
/kənˈteɪdʒəs/
  1. 1
    a contagious disease spreads from one person to another through touch or through the air
    1. a.
      someone who is contagious has a contagious disease
  2. 2
    a contagious feeling or idea spreads quickly from one person or place to another

    His laughter was contagious.

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