I learned about this word today too. It stands for 'Joy Of Missing Out".
You were thinking of buying a coin and later that coin dumps to oblivion. That's JOMO!
Havent heard out but you had mentioned or said it already then this is the only time i do heard of. LOL!
It would really be just totally opposite of "Fear" in "FOMO" which you could also say that it was just a good call that you had hesitate into those times that you do make out some decision
whether you do go for it or not.
This is why intuition and emotion is one of the factors to decide whether you do succeed into this industry or not or just on that particular investment situation.