According to Merriam-Webster, the first-known use of 'friendzone' occurred in 1994

 

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(ripped in half for effect by Retiring Guy

Headline:  AlterNet, 1/19/2024

Liberal activist Ron Filipowski tweeted a short video of the Trumps walking to a black SUV, where a Secret Service agent held the passenger-side rear door open for Melania. After she climbed inside, she appeared to say something to her husband, who said something brief and inaudible, turned around and got inside the car behind his wife.

According to Merriam-Webster, the first-known use of 'friendzone' (noun), defined as  a state of friendship in which one's romantic or sexual interest  in someone is not reciprocated, occurred in 1994.

Other coinages from the same year include:

1. bootylicious
2. BOtox
3. bottom surgery
4. pole dancing
5. terms of service