Free F Sound Medial Words Flashcards Worksheet PDF. Printable flashcards featuring words with the medial “F” sound can be a useful tool for improving pronunciation and vocabulary. Some of the words in this flashcards worksheet are:- Waffle, Telephone, Elephant, Breakfast, Coffee, Office, Muffin, Perfume, Dolphin, Laughing, Traffic, Giraffe, Toffee, Telegraph, Lifeguard, Coughing