Learner's definition of DESTRUCTIVE
[more destructive; most destructive]
: causing a very large amount of damage : causing destruction or harm
It was one of the most destructive storms in recent memory.
She argued that the law was destructive of personal liberties.
The school is concerned about the destructive behavior of a few students.
These kinds of budget cuts can be destructive to morale. [=can damage morale]
destructive criticism [=harsh criticism that hurts someone]