Tending to injure or impair; inflicting harm, wrong, or mischief; of a harmful nature or quality; deleterious; detrimental; hurtful: as, an injurious action or speech; conduct injurious to health or morality.Prone to injure; having disposition or capacity to inflict harm or suffering; hostile; dangerous.Abusive; insulting.Synonyms Damaging, disadvantageous, prejudicial, mischievous, destructive.