There are 282 14-letter words that end with 'ing'.
Note: These 282 14-letter words that end with 'ing' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with ting, ling, ring, ning, sing, zing, ding, king, ying, hing, ging, ping, ming, cing, wing, ving, bing, fing, eing, oing, uing, xing, aing, iing.
4-letter words end with 'ing' (9)