There are 50 13-letter words that end with 'ingly'.
Note: These 50 13-letter words that end with 'ingly' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with tingly, ringly, lingly, dingly, ningly, hingly, singly, kingly, pingly, gingly, yingly, mingly, vingly, zingly, cingly, bingly, wingly, uingly, xingly, oingly, jingly.
6-letter words end with 'ingly' (4)