Uncountable Nouns That End in UM
Explore 457 verified English uncountable nouns ending with the suffix -UM, including Mum, Gum, Aluminum, Momentum, Sodium, Vacuum and Rum. Useful for quantifier accuracy, academic writing, and ESL study and rhyming patterns, browse these mass nouns and non-count terms for substances and concepts below or check quantifier and measurement rules in our noun grammar guide.
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Starts with A24 words
aluminum
asylum
alum
ammonium
aurum
actinium
antiserum
alyssum
americium
alluvium
argentum
aconitum
asphaltum
atracurium
alburnum
acetum
allodium
amylum
aspidium
aevum
arbitrium
anisum
amomum
actinouranium
Starts with B17 words
belgium
bubblegum
barium
beryllium
byzantium
botulinum
bunkum
bohrium
berkelium
bonum
bupleurum
bdellium
blackgum
benzenediazonium
buphthalmum
brimborium
beflum
Starts with C24 words
calcium
cum
consortium
condominium
chum
chromium
cadmium
capsicum
cesium
corundum
colostrum
californium
cryptosporidium
curium
cerium
corium
cambium
carborundum
columbium
corneum
castoreum
cuprum
coagulum
conium
Starts with D24 words
delirium
decorum
durum
disequilibrium
deuterium
dinkum
disodium
dysprosium
dominium
diluvium
damnum
dubnium
diammonium
diazonium
darmstadtium
deliquium
desiderium
didymium
decamethonium
diacodium
dihelium
dirdum
diachylum
desmepithelium
Starts with E24 words
equilibrium
epithelium
endometrium
elysium
endothelium
erbium
electrum
europium
effluvium
einsteinium
ethidium
evangelium
endomysium
endoneurium
euphorbium
excambium
eluvium
erythronium
extracurriculum
endodontium
endostracum
elaterium
emanium
epigeum
Starts with F19 words
freemium
falciparum
ferrum
francium
fermium
ferrocerium
falsum
fermentum
flerovium
ferromolybdenum
ferrovanadium
ferrochromium
ferrotitanium
fastigium
fastidium
fagopyrum
ferrozirconium
ferroaluminum
frankum
Starts with G12 words
gum
gypsum
gallium
germanium
gadolinium
garum
guaiacum
galbanum
gaum
gelsemium
glucinum
glucinium
Starts with H19 words
helium
humdrum
hokum
hafnium
hospitium
holmium
helichrysum
hydronium
hassium
hahnium
hexamethonium
hydrargyrum
hydropericardium
hydroxonium
hematopericardium
hydroxium
helvetium
hydropneumopericardium
humhum
Starts with I16 words
iridium
interregnum
imperium
indium
inoculum
indecorum
ipratropium
ingenium
ignotum
ionium
intermedium
illuvium
indumentum
illinium
iridosmium
isodomum
Starts with J
2 words jhelum
joliotium
Starts with K5 words
khartoum
kumkum
kalium
kokum
kurchatovium
Starts with L17 words
lithium
linoleum
lebensraum
laudanum
laburnum
lanthanum
lutetium
lycopodium
labdanum
livermorium
lignum
lawrencium
limonium
lixivium
latrocinium
laserpicium
lenocinium
Starts with M24 words
mum
momentum
magnesium
molybdenum
mycelium
myocardium
meconium
myometrium
magisterium
molluscum
meerschaum
moscovium
mendelevium
mesothelium
minium
muonium
menstruum
meitnerium
mesothorium
mezereum
multum
masurium
mutuum
magnalium
Starts with N12 words
niobium
neodymium
neptunium
nonequilibrium
nihonium
nonpetroleum
natrium
neuroepithelium
nobelium
nebulium
nielsbohrium
nippitatum
Starts with O16 words
opium
opprobrium
odium
osmium
oakum
organum
oleum
orichalcum
origanum
olibanum
oidium
osmiridium
oxonium
offscum
ordalium
opsonium
Starts with P24 words
platinum
plum
petroleum
potassium
postpartum
plutonium
pandemonium
palladium
plenum
polonium
psyllium
petrolatum
pablum
pyrethrum
positronium
praseodymium
pabulum
periosteum
promethium
pomatum
pythium
protium
protactinium
puerperium
Starts with R18 words
rum
radium
rhodium
rheum
residuum
rubidium
rhenium
ruthenium
rutherfordium
roentgenium
redgum
radiostrontium
respondendum
radiothorium
resorcinum
respectum
rhynchosporium
rusticum
Starts with S24 words
sodium
serum
scum
scrum
selenium
sorghum
sputum
sebum
substratum
strontium
scandium
sedum
sargassum
stickum
sphagnum
stannum
suboptimum
sweetgum
subminimum
sensorium
silphium
subgum
samarium
stramonium
Starts with T17 words
titanium
tedium
thorium
thallium
tantalum
talcum
tritium
tellurium
technetium
terbium
thulium
taraxacum
tetrazolium
talinum
tomentum
tirocinium
tridominium
Starts with U9 words
uranium
unununium
unguentum
ununbium
unnilquadium
ultravacuum
unnilhexium
unnilpentium
unnilseptium
Starts with V11 words
vacuum
valium
vellum
vanadium
viaticum
verticillium
veratrum
veronicastrum
viscum
vitreum
virginium
Starts with W
1 words wampum
Starts with X
1 words xylobalsamum
Starts with Y
2 words yttrium
ytterbium
Starts with Z5 words
zirconium
zanthoxylum
zaqqum
zibetum
zythum