How is Mid Fi defined?

This has been fun for me to read because I have been surrounded by "hi fi" all my life. While the thread is about "mid fi" what I think about most in reading these posts is how the definition of "hi fi" has changed among those who care about it since the time the term was first coined. I am starting a new thread about that.

Yesterdays/yesteryears Hi-fi.When you can buy it for 10% of it's original price tag and still really enjoy it.
*I would also define it as audio gear that is two tiers down from higher-fi.
*It's a special spouse-friendly euphemism for any piece of heinously-expensive gear that can be snuck into a system and passed off as an innocuous addition that one can feign a lukewarm attitude toward. (The male equivalent to: "That old thing? Oh, that's been in the family for years, honey".)

Cwlondon gets a standing ovation for his two responses above. Spot. On.

If your not in financial ruins after each audio purchase , its Mid Fi .

Not total junk just junk.