Pressing Ctrl-w in Insert mode will delete the previous word. It is equivalent to Ctrl-Backspace in Windows, and Opt-Delete in OS X, and really speeds up typing.Vim has the separate concepts of word and WORD (see :help word). This is invaluable for text navigation: it is the difference between w and W, b and B, and so on.Ctrl-w operates on word. Is there a similar instruction for WORD?
Is there a  for WORDs?
key bindings;insert mode;word processing
I don't believe there is one built in, but you can map one yourself in your vimrc:inoremap <c-b> <esc>vBda