How about an operating definition of wisdom as: "in touch with reality".
Yes, "reality" is a biggie, but we could just as well have said "truth", since the dynamic is the same.
The very fact that most people recoil at words like reality and truth, is a measure of the cowardly and slothful nature of our species.
Why is this the case? Why do people masturbate away their lives with duh-brained politics, when they could be actualizing their potential and using their birthright intelligence and sensitivity to eagle-wing their way into transcendence?
Politics is a straight jacket of delusion which is leading directly to Homo sapien extinction because wisdom on this planet is virtually nonexistent. At least relative to the billions of deadweight, deadhead enablers of evil, it's the exception that tragically proves the rule.
The "moral" to all this is that we humans are pathetically doomed unless we have much, much more wisdom. Look at the world. Do we need any more proof? What you see in a virtual vacuum of wisdom.
Here's an odd way to say it. How many dilettantes or even practioners of science REALLY take it in that ultimate realness is where we already are? I mention science to emphasize that a random sample of scientists probably doesn't significantly differ from any other random sample of humans.
Said differently, the challenge of wisdom is MUCH more fundamental than the challenge of science. Good God, you can be a cockroach religious fundamentalist and still have a PhD in chemistry and/or a position at some prestigious lab. The skills and politics are secondary. ALL THAT COUNTS is whether or not science, for you, is categorically dealing with reality. Which it is. It really, really is, but almost certainly hundreds of thousands of "scientists" are scientists in name only. It's just a job and it has NOTHING to do with truth. For that they've got their religious fanaticisms or neurotic/psychotic games.