Countable Nouns Ending in SUM and Containing U

Explore 28 verified English countable nouns ending in SUM and containing U, including Sum, Possum, Opossum, Checksum, Sargassum, Alyssum and Dorsum. Browse these count nouns with singular and plural forms below, or review singular and plural count rules in our noun grammar guide.

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Starts with A
3 words
alyssum
adsum
abomasum
Starts with C
7 words
checksum
callosum
cusum
clausum
crissum
cynoglossum
coeloglossum
Starts with D
2 words
dorsum
dimensum
Starts with E
2 words
expansum
extensum
Starts with F
2 words
fideicommissum
falsum
Starts with G
1 words
grassum
Starts with H
1 words
helichrysum
Starts with O
4 words
opossum
omasum
osteoglossum
odontoglossum
Starts with P
2 words
possum
pensum
Starts with R
1 words
responsum
Starts with S
3 words
sum
sargassum
sensum

•Browse Countable Nouns by Letter (A to Z)

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