Harmful in an unexpected way.
It means "harmful".
Smoking is known to be deleterious to your health.
He was in a deleterious state of mind while his exams. This is an example using the word deleterious.
Divorce can have deleterious effects on children.
Drinking arsenic would be considered deleterious to one's health. Getting into an argument can be deleterious to one's future employment at the company.
'Deleterious' is harmfu,l often in a subtle or unexpected way.
wha the hell is wrong with you there is no such move as deleterious you troll
Deleterious means "bad" or "harmful". If you meant a different word, please ask again.
That is the correct spelling of "deleterious" (generally harmful).
Eating too much junk food can have a deleterious effect on your health.
The deleterious effects of smoking on your health are well-documented.
A deleterious mutation has a negative effect on the phenotype, and thus decreases the fitness of the organism. (A harmful mutation)