What type of person is not containable? Is it a common expression?
If someone is "not containable" it means that they are not able to be contained or held down. In this case, this means that she is unable to be controlled by anyone else. This is not a very common expression to use when talking about people, but it can be used to refer to someone's emotions or feelings. Ex: Her excitement about the promotion was uncontainable. Ex: I am unable to contain my stress.
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