VIM - How to delete a word in the INSERT mode?

I was actually looking for the answer for vscodevim. If you're like me the answer is simple: there's a build-in shortcut in vscode so we can just add the following to settings.json:

"vim.insertModeKeyBindings": [
{
  // Delete one word forward in Insert Mode
  "before": ["<C-e>"],
  "commands": ["deleteWordRight"]
}
]

There's no built-in command for that but you can create your own easily:

inoremap <key> <C-o>de