This feature is enabled by default on VS Code but unfortunately it has not been added to the Jetbrain plugins.
Currently the only way to achive this is by using a live-plugin.
This is how you can use it:
1.install the livePlugin from Jetbrain Marketplace and see the instruction of how to use it here: https://github.com/dkandalov/live-plugin
2.Install Stewardess live-plugin from this repository: https://github.com/cmp-nct/Stewardess/
3.Check the "Run plugins on IDE start" in live-plugin options.
The default key combination for word by word completion is "CTRL+ALT+D". If you wish to change it you can go to the plugin code, line 591 and change it there. I changed it to "meta alt E" which is Command+Option+e on Mac.
registerAction(id = "Stewardess_call", keyStroke = "meta alt E")