How to Add Drop Shadow to Individual Text in an InDesign Text Frame

Hendy,

Since a drop shadow is an object attribute, it will apply to all the text in a text frame. It is not a Character Style attribute nor a Paragraph Style attribute.

If you make the one word a separate text frame and give it a drop shadow, you could copy that frame and paste it as an anchored inline object into the text flow of another story of text.

Frames can nest within other frames. Frames can be pasted into the flow of text.

https://helpx.adobe.com/indesign/using/anchored-objects.html