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Words ending with ION (10-letter)

A curated list of 10-letter words tailored to this exact pattern. Endings like ION often mark word families—helpful to confirm tense or morphology. For example: abdication, aberration, abjuration.

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401 words

Word	Length	Syllables
abdication	10	4
aberration	10	4
abjuration	10	4
abnegation	10	4
abreaction	10	3
abrogation	10	4
abscission	10	3
absolution	10	4
absorption	10	3
abstention	10	3
accusation	10	4
activation	10	4
adaptation	10	4
adjunction	10	3
adjuration	10	4
admiration	10	4
admonition	10	4
adsorption	10	3
advocation	10	4
affixation	10	4
affliction	10	3
aggression	10	3
alienation	10	4
alkylation	10	4
allegation	10	4
allocation	10	4
allocution	10	4
alteration	10	4
ambulation	10	4
ammunition	10	4
amputation	10	4
angulation	10	4
annexation	10	4
annotation	10	4
annulation	10	4
apparition	10	4
apposition	10	4
arrogation	10	4
ascription	10	3
aspiration	10	4
assumption	10	3
attraction	10	3
automation	10	4
bilocation	10	4
butylation	10	4
capitation	10	4
castration	10	3
catenation	10	4
cavitation	10	4
centillion	10	3
coaptation	10	3
cochampion	10	3
cofunction	10	3
cogitation	10	4
collection	10	3
coloration	10	4
combustion	10	3
commission	10	3
compaction	10	3
compassion	10	3
completion	10	3
complexion	10	3
compulsion	10	3
conception	10	3
concession	10	3
conclusion	10	3
concoction	10	3
concretion	10	3
concussion	10	3
conduction	10	3
confection	10	3
confession	10	3
conflation	10	3
congestion	10	3
connection	10	3
conniption	10	3
contention	10	3
contortion	10	3
contrition	10	3
convection	10	3
convention	10	3
conversion	10	3
conviction	10	3
convulsion	10	3
copulation	10	4
coronation	10	4
corotation	10	4
correction	10	3
corruption	10	3
counterion	10	3
cumulation	10	4
cunctation	10	3
deaeration	10	3
decimation	10	4
declension	10	3
decoration	10	4
decryption	10	3
dedication	10	4
defamation	10	4
defecation	10	4
definition	10	4
deflection	10	3
delegation	10	4
demolition	10	4
denegation	10	4
denotation	10	4
denudation	10	4
depilation	10	4
deposition	10	4
depression	10	3
deputation	10	4
derivation	10	4
derogation	10	4
descension	10	3
desolation	10	4
desorption	10	3
detonation	10	4
detraction	10	3
devolution	10	4
digression	10	3
dilatation	10	4
diminution	10	4
discretion	10	3
discussion	10	3
dismission	10	3
dispassion	10	3
dispersion	10	3
displosion	10	3
disruption	10	3
dissection	10	3
dissension	10	3
dissention	10	3
dissuasion	10	3
distension	10	3
distention	10	3
distortion	10	3
divagation	10	4
divination	10	4
domination	10	4
dubitation	10	4
ebullition	10	4
elongation	10	4
eluviation	10	4
emaciation	10	4
emendation	10	4
emigration	10	4
encryption	10	3
enervation	10	4
epilimnion	10	4
equitation	10	4
eructation	10	4
escalation	10	4
estimation	10	4
estivation	10	4
etiolation	10	4
evacuation	10	4
evaluation	10	4
exaltation	10	4
excavation	10	4
excerption	10	3
excitation	10	4
execration	10	4
exhalation	10	4
exhaustion	10	3
exhibition	10	4
exhumation	10	4
expedition	10	4
expiration	10	4
exposition	10	4
expression	10	3
expunction	10	3
exsolution	10	4
extinction	10	3
extraction	10	3
exultation	10	4
exuviation	10	4
fasciation	10	3
federation	10	4
figuration	10	4
filtration	10	3
flirtation	10	3
floatation	10	3
floriation	10	3
foundation	10	3
fumigation	10	4
gemination	10	4
generation	10	4
glaciation	10	3
gleization	10	3
graduation	10	3
habitation	10	4
hebetation	10	4
herniation	10	3
hesitation	10	4
imbibition	10	4
immolation	10	4
imposition	10	4
impression	10	3
imputation	10	4
incitation	10	4
incubation	10	4
indagation	10	4
indecision	10	4
indexation	10	4
indication	10	4
induration	10	4
infarction	10	3
infixation	10	4
inflection	10	3
infliction	10	3
infraction	10	3
ingression	10	3
inhalation	10	4
inhibition	10	4
inhumation	10	4
initiation	10	4
injunction	10	3
innovation	10	4
insolation	10	4
inspection	10	3
insulation	10	4
interunion	10	4
intimation	10	4
intinction	10	3
intonation	10	4
intubation	10	4
inundation	10	4
invitation	10	4
invocation	10	4
involution	10	4
iodination	10	4
ionization	10	4
irreligion	10	4
irrigation	10	4
irritation	10	4
jubilation	10	4
laceration	10	4
lamination	10	4
laureation	10	3
levigation	10	4
levitation	10	4
liberation	10	4
limitation	10	4
literation	10	4
litigation	10	4
lobulation	10	4
locomotion	10	4
lustration	10	3
maceration	10	4
maculation	10	4
marination	10	4
maturation	10	4
medication	10	4
meditation	10	4
midsection	10	3
miscaption	10	3
misprision	10	3
mitigation	10	4
moderation	10	4
modulation	10	4
morulation	10	4
motivation	10	4
multiunion	10	3
mutilation	10	4
navigation	10	4
nodulation	10	4
nomination	10	4
nonfiction	10	3
nucleation	10	3
numeration	10	4
obligation	10	4
obturation	10	4
occupation	10	4
opposition	10	4
oppression	10	3
ordination	10	4
osculation	10	4
outstation	10	3
overaction	10	4
pagination	10	4
palliation	10	3
patination	10	4
peculation	10	4
perception	10	3
percussion	10	3
perfection	10	3
perihelion	10	4
permeation	10	3
permission	10	3
peroration	10	4
persuasion	10	3
perversion	10	3
pincushion	10	3
pixilation	10	4
plantation	10	3
population	10	4
possession	10	3
postillion	10	3
precaution	10	3
precession	10	3
preclusion	10	3
prediction	10	3
preemption	10	2
prehension	10	3
prelection	10	3
preportion	10	3
pretension	10	3
prevention	10	3
procession	10	3
production	10	3
profession	10	3
projection	10	3
proportion	10	3
propulsion	10	3
protection	10	3
protrusion	10	3
punctation	10	3
quaternion	10	3
recitation	10	4
recreation	10	3
redemption	10	3
redivision	10	4
reelection	10	3
reemission	10	3
reflection	10	3
refraction	10	3
refutation	10	4
regression	10	3
regulation	10	4
reignition	10	3
reinvasion	10	3
relaxation	10	4
relegation	10	4
relocation	10	4
renovation	10	4
reparation	10	4
repetition	10	4
reposition	10	4
repression	10	3
reputation	10	4
rescission	10	3
resolution	10	4
resorption	10	3
resumption	10	3
retraction	10	3
revelation	10	4
revocation	10	4
revolution	10	4
rumination	10	4
salivation	10	4
salutation	10	4
sanitation	10	4
saturation	10	4
separation	10	4
septillion	10	3
sextillion	10	3
sibilation	10	4
simulation	10	4
sonication	10	4
spallation	10	3
speciation	10	3
spoliation	10	3
squamation	10	3
stagnation	10	3
starvation	10	3
subduction	10	3
subjection	10	3
submersion	10	3
submission	10	3
subreption	10	3
subsection	10	3
substation	10	3
subvention	10	3
subversion	10	3
succession	10	3
suggestion	10	3
supination	10	4
suppletion	10	3
surjection	10	3
suspension	10	3
tabulation	10	4
television	10	4
temptation	10	3
titivation	10	4
toleration	10	4
trabeation	10	3
trajection	10	3
transition	10	3
trisection	10	3
triskelion	10	3
truncation	10	3
ulceration	10	4
undulation	10	4
urtication	10	4
usurpation	10	4
validation	10	4
vegetation	10	4
veneration	10	4
vermillion	10	3
visitation	10	4
zwitterion	10	3

FAQs

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

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