noun | hurd in·stingkt
Herd instinct is like FOMO on steroids - it's the tendency for people to blindly follow the crowd and make decisions based on what everyone else is doing, rather than thinking for themselves. It's the reason why shitcoins with no fundamentals can pump 1000x overnight, and why people keep falling for obvious scams like Bitconnect.
Example
"I bought into this new altcoin because everyone on Twitter was shilling it - turned out to be a classic pump and dump. Guess I got caught up in the herd instinct again, like a sheep getting led to the slaughterhouse."
"The key to making money in crypto is to go against the herd instinct - when everyone else is buying, that's when you sell, and vice versa. It's like being a contrarian, but with more Lambos and less neckbeards."