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: Paganism is infectious, more infectious than diphtheria or piety.
Septic
Part of speech: adjective
Definition: Of or pertaining to sepsisCausing sepsis or putrefaction