Collective Nouns with IO

Browse 87 verified English collective nouns containing the letters IO, including Organization, Nation, Administration, Section, Generation, Population and Commission. Filter these group nouns for flocks, herds, and collections by word length below, or check subject-verb agreement rules for groups in our noun grammar guide.

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Starts with A4 words
administration
association
aggregation
angiospermae
Starts with B3 words
battalion
biota
biocenosis
Starts with C21 words
commission
collection
competition
corporation
coalition
communion
confederation
congregation
constellation
convocation
confectionery
conglomeration
curiosa
chariotry
consociation
counterorganization
craniota
chondriome
cetiosauria
counterdeputation
chondrioma
Starts with D4 words
division
delegation
deputation
decurionate
Starts with E3 words
expedition
exaltation
embiotocidae
Starts with F4 words
faction
federation
fascio
fioretti
Starts with G
2 words
generation
gabionage
Starts with I
1 words
instrumentation
Starts with L
2 words
legion
legation
Starts with M8 words
mission
microbiome
microbiota
murmuration
mediocracy
meiofauna
multination
macrobiota
Starts with N
2 words
nation
nationality
Starts with O
2 words
organization
opposition
Starts with P9 words
population
profession
prosecution
procession
percussion
priorate
panhellenion
plasmodiophoraceae
plasmodiophorales
Starts with S15 words
section
selection
subpopulation
subcommission
subcollection
suborganization
supernation
subgeneration
subassociation
subcivilization
supercivilization
superorganization
siol
superinstitution
synedrion
Starts with T3 words
trio
tercio
ternion
Starts with U
1 words
union
Starts with V3 words
vegetation
vexillation
vespertilionidae

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