My questions are: the words sun glasses mean the same as sunglasses? And both are grammatically correct? And both are still in use?


Both are correct, but "sunglasses" is the vastly more common version in the USA. I'm not sure what the preferred UK/international usage is.

  • The preferred UK usage is also "sunglasses".
    – rjpond
    Dec 8 '20 at 5:42

I've checked a number of dictionaries, and they all show "sunglasses", with no alternative spelling. If I saw "sun glasses", I would expect it to mean something different.

  • I just simply searched in the english wikipedia about sun glasses (en.wikipedia.org/wiki/Sunglasses), it says "Sunglasses or sun glasses (informally called shades or sunnies; more names below)"
    – user125904
    Dec 7 '20 at 18:37
  • Ok. Have you found any dictionaries that show that spelling? Dec 7 '20 at 18:47

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