Countable Nouns Ending in ASS and Containing O

Browse 41 valid English countable nouns ending in ASS and containing O, from Biomass, Hourglass, Overpass, Morass, Lemongrass, Shotglass and Contrabass to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with A
2 words
arrowgrass
astrocompass
Starts with B
4 words
biomass
bromegrass
bonnilass
bonilass
Starts with C
9 words
contrabass
coverglass
cottongrass
cordgrass
couchgrass
cogongrass
cowgrass
clovergrass
corcass
Starts with F
1 words
ferroglass
Starts with G
5 words
gyrocompass
goosegrass
gallowglass
groundmass
galloglass
Starts with H
1 words
hourglass
Starts with L
2 words
lemongrass
lopgrass
Starts with M
2 words
morass
meadowgrass
Starts with N
1 words
nonclass
Starts with O
4 words
overpass
overclass
orchardgrass
outpass
Starts with P
1 words
portass
Starts with R
1 words
rotgrass
Starts with S
6 words
shotglass
sparrowgrass
scorpiongrass
stonebass
sonderclass
soulmass
Starts with T
1 words
toadgrass
Starts with W
1 words
whitlowgrass

•Browse Countable Nouns by Letter (A to Z)

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