Delete to beginning of current word
If you are typing something in your shell and you need to delete the entire word you're on, instead of pressing backspace repeatedly, you can press ESC + Backspace and this will delete back to the start of the current word you are on.
Example; Say you wanted to delete this whole filepath, or a majority of it. Simply place your cursor at the end (or wherever you want to delete up to) and press ESC + Backspace to delete all the way back to the word vim
vim /i/accidentally/typed/something/big/that/was/incorrect
and it might leave you with something like this
vim /that/was/incorrect