kindness
Soulless, selfless, seamless, softness...
tenderness
Prince
richness, reckless, realness, rankness, readiness, rawness, regress, rudeness, rashness
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -E-SS-SS. That is, eight letter words with 2nd letter E and 4th letter S and 5th letter S and 7th letter S and 8th letter S. In alphabetical order, they are: reassess
Some 8 letter word with 2 Ds and 2 Ss are:descendsdesisteddespiseddisbandsdiscardsdisdainsdiseaseddisposeddissuadedistendssubsided
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --I-SS--. That is, eight letter words with 3rd letter I and 5th letter S and 6th letter S. In alphabetical order, they are: triassic
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern U--SS---. That is, eight letter words with 1st letter U and 4th letter S and 5th letter S. In alphabetical order, they are: unissued
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern V--SS---. That is, eight letter words with 1st letter V and 4th letter S and 5th letter S. In alphabetical order, they are: voussoir
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern -I-SS--A. That is, eight letter words with 2nd letter I and 4th letter S and 5th letter S and 8th letter A. In alphabetical order, they are: piassaba piassava
The difference between "ss" and "fs" is that "ss" is a double letter that is used in the middle of a word to represent the "s" sound, while "fs" is not a common combination of letters in English words.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern AB-SS---. That is, eight letter words with 1st letter A and 2nd letter B and 4th letter S and 5th letter S. In alphabetical order, they are: abessive