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10-Letter Words Ending with UM

For word games needing UM suffixes, here's your 10-letter word resource. Popular examples include ACETABULUM, AMBULACRUM, ANDROECIUM, plus ANTEBELLUM, APOTHECIUM, ARGUMENTUM and many more. Each word links to its dictionary entry for deeper understanding.

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91 words

Word	Length	Syllables
acetabulum	10	5
ambulacrum	10	4
androecium	10	3
antebellum	10	4
apothecium	10	4
argumentum	10	4
ascogonium	10	4
auditorium	10	4
cafetorium	10	4
cerebellum	10	4
cinerarium	10	4
cockalorum	10	4
colloquium	10	3
compendium	10	3
consortium	10	3
curriculum	10	4
delphinium	10	3
dysprosium	10	3
epicardium	10	4
epidendrum	10	4
epineurium	10	4
epithelium	10	4
gadolinium	10	4
glochidium	10	3
haustellum	10	3
haustorium	10	3
honorarium	10	4
hypanthium	10	3
involucrum	10	4
kettledrum	10	3
lawrencium	10	3
lebensraum	10	3
lycopodium	10	4
meerschaum	10	2
memorandum	10	4
millennium	10	3
miracidium	10	4
molybdenum	10	4
moratorium	10	4
myocardium	10	3
nasturtium	10	3
natatorium	10	4
nephridium	10	3
oceanarium	10	4
ommatidium	10	4
opprobrium	10	3
osmeterium	10	4
osmiridium	10	4
pancratium	10	3
panjandrum	10	3
paramecium	10	4
parapodium	10	4
perimysium	10	4
periosteum	10	3
peritoneum	10	4
petrolatum	10	4
phyllodium	10	3
plasmodium	10	3
polemonium	10	4
postbellum	10	3
postpartum	10	3
praesidium	10	3
primordium	10	3
principium	10	3
procambium	10	3
promethium	10	3
propylaeum	10	3
proscenium	10	3
prostomium	10	3
psalterium	10	3
puerperium	10	3
quadrivium	10	3
referendum	10	4
sanatorium	10	4
sanitarium	10	4
sanitorium	10	4
sclerotium	10	3
seaborgium	10	3
sequestrum	10	3
sestertium	10	3
simulacrum	10	4
spermatium	10	3
sporangium	10	3
stomodaeum	10	3
stramonium	10	3
stumblebum	10	3
suboptimum	10	4
substratum	10	3
sudatorium	10	4
technetium	10	3
triclinium	10	3

FAQs

What’s typical about UM-ending words?
UM often marks suffix families; think about derivatives when guessing.

Do you include UK/US spellings?
Where they exist, both may appear.