Free NG Sound Medial Words Flashcards Worksheet PDF. Printable flashcards featuring words with the medial “NG” sound can be a useful tool for improving pronunciation and vocabulary. Some of the words in this flashcards worksheet are:- Pondering, Squishing, Crumbling, Glancing, Swallowing, Lungfish, Dragging, Strapping, Choking, Juggling, Swinging, Blasting, Trimming, Flicking, Thumbing, Skating