gimme explaination

[curious freak]

why 'discuss about' is grammatically wrong?

[Teia]

why 'discuss about' is grammatically wrong?

Hi

Discuss is a transitive verb. It is followed by a direct object. You can say either discuss or speak about, but not discuss about.

e.g. We discussed the problem when we met last week.

discuss:
To speak with another or others about; talk over.
To examine or consider (a subject) in speech or writing.
discuss - Definitions from Dictionary.com
Teia

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