That it's bad and can hurt you.
The Latin root word "noxa" means harmful or dangerous. It is often used in English words related to injury or harm, such as noxious or obnoxious.
what are the danerous or harmful drugs
Insidious means proceeding in a gradual, subtle way but with harmful effects. It often refers to something harmful or dangerous that is not immediately obvious or easily detected.
HIV is harmful and dangerous.
"More harmful" and "most harmful." We would not use the -er and -est suffixes on the -ful which is already a suffix.
It is not harmful but it dangerous.
Noxious
For harmful, damaging, injurious, detrimental, negative, hurtful, destructive. For dangerous, hazardous, perilous, unpredictable, vulnerable, treacherous
yes all drugs can be dangerous when used in an improper way. when they are used in a large quantity they can be lethal or they might not be directly harmful but can lead to events which are harmful and dangerous.
Cods aren't harmful to humans.
It is useful!
They can be dangerous if you don't treat them with respect.