- infectious, infective - caused by infection or capable of causing infection; "viruses and other infective agents"; "a carrier remains infective without himself showing signs of the disease"
Antonym: antiseptic (indirect, via septic)
- infectious - easily spread; "fear is exceedlingly infectious; children catch it from their elders"- Bertrand Russell
Antonyms: noninfectious, noncommunicable, noncontagious, nontransmissible
- infectious - of or relating to infection; "infectious hospital"; "infectious disease"