harmful

英['hɑːmfʊl;-f(ə)l] 美['hɑrmfəl]

1. injurious to physical or mental health;

"noxious chemical wastes"

"noxious ideas"

2. able or likely to do harm

3. causing or capable of causing harm;

"too much sun is harmful to the skin"

"harmful effects of smoking"

4. constituting a disadvantage

5. contrary to your interests or welfare;

"adverse circumstances"

"made a place for themselves under the most untoward conditions"

6. tending to cause great harm