Originally Posted by suby_rafael
In poker, donk betting means betting out of position without the betting initiative (you did not make the last bet or raise on the previous betting round.) It's typically considered an unorthodox and unusual move because the traditional play after passively calling a bet out of position would be to check the next round--a donk bet is unexpected and can throw off your opponent's plans for the hand.
The name "donk bet" derives from the common derogatory term "donkey" for bad players, because bad/clueless players will often make this play without knowing why they are doing it, simply because they don't know what's going on.
Under the right circumstances, however, it can be very good - by no means does donk betting necessitate bad play.
TYVM for lucid explanation.
Because I do "donk-bet" under right circumstances. If there are players with poor post-flop skills who are fit-or-fold players on the flop, it's good to "donk-bet" out since you win more often than not against these type of players. And sometimes, "donk-bet" freezes their ability to c-bet and turn them into fit-or-fold mode. "Donk-bet" can also make the pot big and protect your hand, not give a free card while you have the best of it.
Had wondered why this is called donk-bet instead of other name bcz like you said, it doesn't necessitate bad play but people make it sound like a bad play when it can actually be a good play under right circumstances.