Is drab an English word and if yes how would you use it in a sentence?

Yes, "drab" is definitely an English word. It means lacking in brightness or color, dull.

Here are some examples of how to use it in a sentence:

* The walls were painted a drab shade of gray, making the room feel depressing.

* She wore a drab brown coat that made her look older than she was.

* The city's landscape was a drab mix of concrete and steel.

* His life felt drab and routine, lacking excitement and purpose.

* The presentation was surprisingly drab, with no visuals or engaging storytelling.