How to delete a word in iTerm in mac os

Go to your iTerm preferences select "profiles" then "key" and change your presets in "Natural Text Editing"

It should work immediately after.

It works with iTerm version 3.3.12

Edit:

In version 3.4, there's a slight UI change. So you need to go specifically to your iTerm preferences select Profiles > Keys > Key Mappings > Presets > Nature Text Editing

This helped me.

Delete a word - Send Hex Codes - 0x1b 0x08 or 0x17

Delete a line - Send Hex Codes - 0x15