Free B Sound Medial Words Flashcards Worksheet PDF. Printable flashcards featuring words with the medial “B” sound can be a useful tool for improving pronunciation and vocabulary. Some of the words in this flashcard worksheet are:- Abacus, Abdomen, Airborne, Album, Amber, Asbestos, Bible, Baseball, Blackberry, Bubblebath, Bubblegum, Umbrella, Vegetable, Submarine, Robust, Robust