Antonyms of adj noninfectious

1 sense of noninfectious

Sense 1
noninfectious (vs. infectious) -- (not infectious)

infectious (vs. noninfectious) -- (easily spread; "fear is exceedingly infectious; children catch it from their elders"- Bertrand Russell)
        => catching, communicable, contagious, contractable, transmissible, transmittable -- ((of disease) capable of being transmitted by infection)
        => contagious -- (easily diffused or spread as from one person to another; "a contagious grin")
        => corrupting, contaminating -- (that infects or taints)

Similarity of adj noninfectious

1 sense of noninfectious

Sense 1
noninfectious (vs. infectious) -- (not infectious)
       => noncommunicable, noncontagious, nontransmissible -- ((of disease) not capable of being passed on)