Learn English – Is it grammatically correct to say “Many more happy returns of the day “

grammargrammaticalityword-usage

Many people greet me "Many more happy returns of the day" on my birthday.
I thought it is grammatically wrong. Can we use "many" and "more" at a time in a sentence. I thought that it is correct to greet "Many happy returns of the day".
Are the given below sentences grammatically correct?
1)Many more happy returns of the day.
2)Many many happy returns of the day.

Best Answer

It is not redundant because "many" and "more" do not mean the same thing. It is simply longer. "More" and "longer" or "better" for example is not grammatically correct because they both serve the same meaning, but many and more do not mean the same thing.

"More happy" is not grammatically incorrect, but the "many more" refers to "returns" not "happy"