There are 12 11-letter words that end with 'eing'.
| appliqueing | chivareeing | disagreeing | 
| gratineeing | filagreeing | filigreeing | 
| shivareeing | sightseeing | snowshoeing | 
| squeegeeing | squilgeeing | tippytoeing | 
Note: These 12 11-letter words that end with 'eing' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with eeing, ieing, geing, oeing, ueing, being, yeing, aeing, leing, seing, teing, ceing, keing, weing.
5-letter words end with 'eing' (1)