a. damaging; noxious; detrimental; dangerous
The pesticide is chemicals which farmers put on their crops to kill harmful insects.
Sentence in Classic:
The education of women, for instance, would naturally be regarded as likely to be harmful, but the government opens schools and universities for women.
Anna Karenina(V2) By Leo Tolstoy Context
You can understand that there are reasons for this and that I could not have exiled the Postmaster had he not been a harmful person.
War and Peace(V4) By Leo Tolstoy Context
It was impossible to take bread and clothes from our hungry and indispensable soldiers to give to the French who, though not harmful, or hated, or guilty, were simply unnecessary.
War and Peace(V5) By Leo Tolstoy Context
The activity of Alexander or of Napoleon cannot be called useful or harmful, for it is impossible to say for what it was useful or harmful.
War and Peace(V6) By Leo Tolstoy Context
And the fact in itself still seemed harmless enough; only it was a fertile source of harmful complications.
House of Mirth By Edith Wharton Context
The neighbourhood of unseen sleepers filled him with strange dread, as though they could harm him, and he prayed that the day might come quickly.
A Portrait of the Artist as a Young Man By James Joyce Context