Countable Nouns Ending in SUM and Containing SS

Browse 11 valid English countable nouns ending in SUM and containing SS, from Possum, Opossum, Sargassum, Alyssum, Fideicommissum, Crissum and Cynoglossum to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with A
1 words
alyssum
Starts with C
3 words
crissum
cynoglossum
coeloglossum
Starts with F
1 words
fideicommissum
Starts with G
1 words
grassum
Starts with O
3 words
opossum
osteoglossum
odontoglossum
Starts with P
1 words
possum
Starts with S
1 words
sargassum

•Browse Countable Nouns by Letter (A to Z)

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