harmful
harm|ful /h'ɑːrmfʊl/
[ADJ] oft ADJ to n
Something that is harmful has a bad effect on something else, especially on a person's health.
...the harmful effects of smoking...
It believed the affair was potentially harmful to British aviation.
= damaging
≠ harmless
[ADJ] oft ADJ to n
Something that is harmful has a bad effect on something else, especially on a person's health.
...the harmful effects of smoking...
It believed the affair was potentially harmful to British aviation.
= damaging
≠ harmless