There are 17 10-letter words that end with 'leness'.
| doubleness | edibleness | humbleness |
| littleness | futileness | gentleness |
| facileness | feebleness | femaleness |
| fickleness | nimbleness | simpleness |
| singleness | stableness | subtleness |
| suppleness | usableness | |
Note: These 17 10-letter words that end with 'leness' are found from the USA & Canada version of the tournament Scrabble word list.