No sign of him. Oh, wait. Everything's a go. All right?
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Yes. Matters can proceed.
Sounds very American and as an Englishman it doesn't feel right.

I'd prefer 'Everyone's here, let's go'
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The meaning changes a bit, Adrenochrome. 'Let's go' is not the same as 'matters can proceed'.

c. Informal A situation in which planned operations can be effectuated: The space mission is a go. (Am Heritage Dict).
Thanks, Mister Micawber!
I agree that it is acceptable but, as I'm sure you noticed, your dictionary definition comes from the American Heritage Dictionary and my point was that whilst it is used in America, it is not a term or phrase that an English person would use. Not least because we don't have a space program, whereas the only time I've actually heard the phrase is in Hollywood movies about NASA or the military.

Also, 'let's go' can mean 'lets get on with it' in England, informally.

The only thing the poster needs to think about is whether he wishes to learn English or American English, and I only intended to put the English perspective forward.
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English or American English
I think you mean 'British English'.

Huevos plays it safe by positing AmE against SE, or "Standard English." I was fascinated to find that such a thing exists. Emotion: thinking
No Mr Micawber, I mean English as spoken and written in England, hence why it is called English not British. I believe the alternative is Standard English, and the Scots speak Gaellic, the Welsh speak Welsh and the Irish speak Celtic.

England invented English hence it is called English. It is the original not a derivative and therefore needs no further differnetiaition.
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