Infectious is a term used to describe a disease or virus that can be spread from one person to another. PESTILENT (9 letters) is an adjective meaning causing or tending to cause death or destruction, while VIRULENT (8 letters) is an adjective meaning extremely severe or harmful in its effects. EPIDEMIC (8 letters) is a noun meaning a widespread occurrence of an infectious disease in a community at a particular time. PESTILENTIAL (12 letters) is an adjective meaning causing or tending to cause death or destruction, while CONTAGIOUS (10 letters) is an adjective meaning capable of being transmitted from one person to another. COMMUNICABLE (12 letters) is an adjective meaning capable of being transmitted from one person to another, while MIASMIC (7 letters) is an adjective meaning relating to or caused by a miasma, a noxious atmosphere or influence. TRANSFERABLE (12 letters) is an adjective meaning able to be passed from one person to another, while TOXIC (5 letters) is an adjective meaning poisonous or able to cause harm. Corrupting (10 letters) is an adjective meaning having the power to corrupt or destroy, while contaminating (13 letters) is an adjective meaning making something impure or unclean. DISEASED (8 letters) is an adjective meaning affected by a disease, while ENDEMIC (7 letters) is an adjective meaning native to or confined to a certain region. CATCHING (8 letters) is an adjective meaning able to be caught or transmitted.