Countable Nouns Ending in UM and Containing SU

This list gathers 55 English countable nouns ending in UM and containing SU, such as Sum, Possum, Opossum, Checksum, Substratum, Subforum and Sugarplum. Use the sorting controls below to organize entries by length, or consult our noun grammar guide to review singular and plural count rules.

Refine list...
JUMP:
Sort:
Group:
Case:
View:
JUMP TO:
Select any word to view available definitions & photosSelect any word for details
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 M
1 words
marsupium
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
24 words
sum
substratum
subforum
sugarplum
sargassum
superpremium
supremum
suboptimum
subphylum
subminimum
subgum
superstratum
sudarium
superphylum
sustentaculum
sensum
succedaneum
sulfonium
sudatorium
supernaculum
suppedaneum
submentum
suspensorium
surrogatum
Starts with T
1 words
transuranium

•Browse Countable Nouns by Letter (A to Z)

Select an ending letter to browse countable nouns
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWordsVocabulary HubPositive WordsNegative Words
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.