You’re typing away in Vim’s Insert mode and just typed a word wrongly. That’s a very common scenario right? If you come from a MS Word background (like me), your first instinct may be to hit Shift+Backspace. In Vim, however, that doesn’t work. I’ll give two methods that do.
Simple as that. As stated in the Vim documentation, in Insert mode this is to “delete the word before the cursor”.
Press Esc (or Ctrl+[, or Ctrl+c) to enter Normal mode, and ciw to delete the current word and pop back into Insert mode at the same time. (Bonus: do <Esc>ciW to delete the current WORD, which includes punctuation, such as “short-term” or <i,j>)
This was what I did before I knew about Ctrl+w.