Countable Nouns That End in SUM

Explore 28 verified English countable nouns ending with the suffix -SUM, including Sum, Possum, Opossum, Checksum, Sargassum, Alyssum and Dorsum. Useful for ESL grammar practice, determiner usage, and plural spelling and rhyming patterns, 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 A3 words
alyssum
adsum
abomasum
Starts with C7 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 O4 words
opossum
omasum
osteoglossum
odontoglossum
Starts with P
2 words
possum
pensum
Starts with R
1 words
responsum
Starts with S3 words
sum
sargassum
sensum

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