Rude about vs rude to?

[duc]

Put a correct preposition to the blank:
1.I didn't realise she was the author so I was so rude ...... his new book.
I look ''rude'' up in the dictionary and find that it has to do with ''to'' but I think ''about'' is more appropriate.
Is this true? Please give me your opinion
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[Molly]

about

[duc]

Can you give me a clearer explanation because I only do it by feeling.
Many thanks.

[Alan]

Hi Duc,

'Rude about' is less specific than 'rude to'. You can be rude about someone behind their back but rude to when you are face to face.

Alan
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[Torsten]

[duc]

Ah I write it by mistake.Sorry !!

[Ola Kehinde]

Hey! you need to improve more on your expression. look at the last sentence, felt it's better written; Ah i wrote it by mistake. sorry! more power to your elbow. you can do better. Best of luck