Septic
Part of speech: adjective
Definition: Of or pertaining to sepsis Causing sepsis or putrefaction
Infectious
Part of speech: adjective
Definition: Transmitted from one person to another, usually through the air breathed.Able to infect others.Spreading quickly from one person to another.Memorable and invoking excitement or interest.
Example sentence: Sadism is not an infectious disease that strikes a person all of a sudden. It has a long prehistory in childhood and always originates in the desperate fantasies of a child who is searching for a way out of a hopeless situation.