There are 11 13-letter words that end with 'liness'.
| brotherliness | dastardliness |
| comradeliness | leisureliness |
| niggardliness | painterliness |
| sprightliness | uncleanliness |
| unearthliness | unsightliness |
| unworldliness | |
Note: These 11 13-letter words that end with 'liness' are found from the USA & Canada version of the tournament Scrabble word list.