Countable Nouns Starting with A and Containing UM

Explore 133 verified English countable nouns starting with A and containing UM, including Argument, Assumption, Autumn, Asylum, Accumulation, Aquarium and Auditorium. 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 AB
1 words
abomasum
Starts with AC12 words
accumulation
acumen
accumulator
acetabulum
aconitum
acetum
acumination
aciculum
acroterium
accumbency
acarodomatium
acaridomatium
Starts with AD10 words
addendum
adumbration
adsum
adytum
adenium
adiantum
adminiculum
adstratum
additum
adlumia
Starts with AE9 words
aeonium
aerarium
aecium
aecidium
aeroperitoneum
aethalium
aeciotelium
aegopodium
aerobium
Starts with AF
1 words
affectum
Starts with AG
2 words
agendum
ageratum
Starts with AL24 words
alumnus
alum
alphanumeric
alumna
albumin
allium
albumen
altocumulus
alyssum
alluvium
aluminosilicate
aluminate
alburnum
aluminide
albuminoid
allodium
albuminate
albumose
alumroot
albuminuric
alumstone
albumblatt
allegatum
albuminurophobia
Starts with AM7 words
amentum
amphiuma
amomum
ambulacrum
amphithecium
amphigastrium
americanumancestor
Starts with AN24 words
annum
antiserum
anthurium
antrum
antirrhinum
androecium
antheridium
antihumanist
antirheumatic
antependium
anacardium
anethum
animalculum
angraecum
anthodium
anhalonium
androconium
angrecum
anticlinorium
androsporangium
androphorum
androgonium
anoplotherium
androgametangium
Starts with AP5 words
apodyterium
appressorium
aprium
apothecium
apterium
Starts with AQ
1 words
aquarium
Starts with AR13 words
argument
argumentation
arboretum
arum
arcanum
armamentarium
argumentum
archegonium
archaebacterium
arbitrium
argyranthemum
arctium
archesporium
Starts with AS12 words
assumption
asylum
assumer
assumpsit
assumability
asarum
aspergillum
aspidium
asplenium
aspersorium
ascidium
ascogonium
Starts with AT
2 words
atrium
athenaeum
Starts with AU4 words
autumn
auditorium
autojumble
autothaumaturgist
Starts with AV
1 words
avicularium

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