Thesaurus
Synonyms & Antonyms of harmful
causing or capable of causing harm
- DDT has been proven to be extremely harmful to the environment
Synonyms for harmful
Words Related to harmful
Near Antonyms for harmful
Antonyms for harmful
Test Your Vocabulary
The Great British Vocabulary Quiz
-
- Named after Sir Robert Peel, what are British police called?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share harmful
Time Traveler for harmful
The first known use of harmful was in the 14th century
See more words from the same century