nox|ious «NOK shuhs», adjective.
1. very harmful; poisonous; pernicious: »
Fumes from the exhaust of an automobile are noxious. Poison ivy is a noxious plant; avoid touching its leaves.
SYNONYM(S): unhealthful, deadly, unwholesome.3. Obsolete. criminal.
–nox´ious|ly, adverb.
–nox´ious|ness, noun.
Useful english dictionary. 2012.