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This is a post by NiceTryDad on instagram.
Son: "What does the word "gay" mean?"
Me: "It means happy."
Son: "Oh, are you gay?"
Me: "No, son, I have a wife."
Later then, I googled up the meaning of the word "gay". And I found that it has some meanings in its older use, like having or showing a merry, lively mood, and also bright or showy. And also, this site explains:
Gay meaning ‘homosexual’ became established in the 1960s as the term preferred by homosexual men to describe themselves. It is now the standard accepted term throughout the English-speaking world. As a result, the centuries-old other senses of gay meaning either ‘carefree’ or ‘bright and showy’ have more or less dropped out of natural use. The word gay cannot be readily used today in these older senses without arousing a sense of double entendre, despite concerted attempts by some to keep them alive. Gay in its modern sense typically refers to men (lesbian being the standard term for homosexual women) but in some contexts it can be used of both men and women
I know that that post was just a joke, but I'm wondering if I can use the word gay to indicate that someone's happy in business or academical writings. Since people would always refer it to its modern sense (homosexuality).