15 Letter Words
incentivization
29
immortalization
28
infantilization
27
immunodiffusion
26
incomprehension
24
interiorization
24
internalization
24
indemnification
23
intercomparison
21
incentivisation
20
intensification
20
interconversion
20
immortalisation
19
interconnection
19
interpopulation
19
intrapopulation
19
introsusception
19
intussusception
19
isoimmunisation
19
inconsideration
18
indetermination
18
infantilisation
18
insubordination
18
intermodulation
18
intervisitation
18
14 Letter Words
immobilization
29
immiserization
27
ichthyosaurian
25
indigenization
25
illegalization
24
inorganization
24
imposthumation
23
initialization
23
interconnexion
23
immunoglobulin
21
inapprehension
21
interdiffusion
21
identification
20
immobilisation
20
immunoreaction
20
imperturbation
20
implementation
20
inappreciation
20
incapacitation
20
intercommunion
20
infralapsarian
19
immiserisation
18
illegitimation
17
incoordination
17
indoctrination
17
13 Letter Words
ichthyopsidan
27
inexpectation
24
isomerization
24
imperforation
20
improvisation
20
informatician
20
impostumation
19
impropriation
19
impignoration
18
individuation
18
induplication
18
infraposition
18
inobservation
18
impenetration
17
impersonation
17
incapsulation
17
incarceration
17
incorporation
17
incrimination
17
interpunction
17
introspection
17
investigation
17
incardination
16
indisposition
16
indistinction
16
12 Letter Words
immunization
25
insubjection
23
idealization
22
illaqueation
21
imperfection
21
interjection
21
intoxication
21
introjection
21
imperception
20
indomethacin
20
inescutcheon
19
inflammation
19
incompletion
18
inoccupation
18
insufflation
18
immoderation
17
impregnation
17
inactivation
17
infibulation
17
inhabitation
17
irreflection
17
immiseration
16
immunisation
16
implantation
16
inconclusion
16
11 Letter Words
immunotoxin
22
itemization
22
idolization
21
iridization
21
irreflexion
21
illiquation
20
inexecution
20
inquination
20
inquiration
20
inquisition
20
imparkation
19
infantryman
19
infantrymen
19
inextension
18
icosahedron
17
imbrication
17
implication
17
imprecation
17
imprecision
17
improbation
17
infieldsman
17
infieldsmen
17
immigration
16
impugnation
16
incurvation
16
10 Letter Words
infixation
20
iodization
20
inequation
19
injunction
19
ionization
19
indexation
18
infrahuman
18
imbibition
16
interwoven
16
inchoation
15
infarction
15
inflection
15
infliction
15
infraction
15
inhibition
15
inhumation
15
interchain
15
invocation
15
immanation
14
imminution
14
immolation
14
impanation
14
imposition
14
impression
14
imputation
14
9 Letter Words
implexion
20
inflexion
19
influxion
19
injection
18
ibuprofen
16
ichneumon
16
interjoin
16
impaction
15
immunogen
14
infection
14
ironwoman
14
ironwomen
14
immersion
13
immission
13
impassion
13
impletion
13
implosion
13
impulsion
13
inception
13
isokontan
13
idioticon
12
indiction
12
indirubin
12
induction
12
inflation
12
8 Letter Words
infixion
18
infobahn
16
insucken
14
imbolden
13
isochron
13
idyllian
12
imprison
12
infusion
11
inhesion
11
invasion
11
invertin
11
iodopsin
11
isodicon
11
isodomon
11
isopodan
11
inaction
10
incision
10
insectan
10
irenicon
10
islesman
10
islesmen
10
ideation
9
ignition
9
ignitron
9
iguanian
9
7 Letter Words
imbrown
14
inchpin
14
inkhorn
14
inwoven
13
impregn
12
inhibin
12
inhuman
12
indrawn
11
ingrown
11
indamin
10
indican
10
indigen
9
ironman
9
ironmen
9
isleman
9
islemen
9
isospin
9
indulin
8
ingrain
8
ionogen
8
iridian
8
insulin
7
isotron
7