13 letters
- greensickness24
- gristlinesses17
- grossularites17
- grotesqueness26
- grouchinesses22
- growthinesses21
- guardednesses19
- guesstimating22
- guilelessness19
- guiltlessness19
- gutlessnesses18
- gyrocompasses26
- habitableness23
- haggardnesses21
- hairdressings19
- haphazardness31
- haplessnesses20
- harmfulnesses24
- hatefulnesses21
- haughtinesses21
- hawkishnesses25
- hazardousness27
- healthfulness24
- healthinesses19
- heartlessness17
- heartsickness23
- heedfulnesses22
- heinousnesses18
- hellishnesses20
- helpfulnesses25
- hideousnesses18
- hilariousness18
- hirsutenesses17
- hoggishnesses22
- honorableness21
- hopefulnesses24
- hotheadedness20
- houselessness18
- humorlessness21
- hurriednesses18
- hurtfulnesses22
- identicalness20
- idiomaticness21
- ignoblenesses21
- illiberalness20
- illicitnesses19
- illogicalness22
- imaginariness20
- imitativeness21
- immediateness21
- immensenesses21
- immovableness28
- immutableness25
- impassability25
- impassibility25
- impassiveness24
- impassivities23
- imperfectness26
- imperiousness21
- impermissible26
- impermissibly28
- impetuousness22
- impossibility25
- impreciseness23
- impressionism23
- impressionist20
- impulsiveness26
- inanimateness19
- incapableness25
- inclusiveness24
- incorrectness21
- incorruptness22
- incuriousness20
- indissociable22
- indissociably24
- ineffableness25
- inexactnesses25
- inexpressible28
- inexpressibly30
- infusibleness23
- ingeniousness19
- ingenuousness20
- ingrownnesses21
- inheritresses16
- inhumannesses22
- initialnesses16
- injuriousness26
- innocuousness21
- insatiateness15
- insidiousness17
- insolubleness21
- inspissations18
- instantnesses16
- intensenesses16
- intensiveness20
- intercessions18
- intercrossing20
- intermissions18
- intersessions15
- intricateness18
- introgressant17
- introgression17
- introgressive20
- intromissions18
- intrusiveness20
- intuitiveness20
- intussuscepts22
- invectiveness26
- inventiveness24
- invidiousness21
- inviolateness20
- invisibleness23
- irascibleness21
- irksomenesses21
- irrepressible20
- irrepressibly22
- irritableness18
- jealousnesses25
- jitterinesses23
- joblessnesses27
- jointednesses25
- joylessnesses26
- judiciousness29
- kittenishness21
- knowingnesses25
- laboriousness19
- laggardnesses20
- languidnesses20
- lastingnesses18
- laughableness24
- lawlessnesses19
- learnednesses17
- lecherousness21
- leisureliness17
- lengthinesses20
- letterpresses17
- liberalnesses19
- lickerishness24
- lightfastness22
- lightsomeness22
- likablenesses23
- liltingnesses19
- limitednesses19
- limitlessness19
- lissomenesses18
- literalnesses16
- litigiousness18
- livablenesses23
- loathsomeness20
- logicalnesses21
- losablenesses19
- loutishnesses18
- lovablenesses23
- lowerclassman25
- lowerclassmen25
- lucrativeness23
- ludicrousness21
- lumpishnesses24
- lustfulnesses21
- luxuriousness25
- lyricalnesses21
- maladroitness19
- maliciousness22
- mannishnesses21
- marchionesses22
- marvelousness23
- massivenesses21
- masterfulness22
- mawkishnesses26
- meaninglessly24
- melodiousness20
- memorableness24
- mercenariness21
- mercilessness21
- mercurialness22
- microcassette22
- millionairess19
- mindfulnesses24
- misaddressing21
- misassembling26
- misassumption24
- misclassified24
- misclassifies23
- miserableness21
- miserlinesses18
- misguidedness22
- misimpression23
- misstatements20
- momentariness21
- momentousness22
- monstrousness19
- movablenesses25
- mundanenesses21
- murderousness20
- naturalnesses17
- naughtinesses20
- necessitarian18
- necessitating20
- necessitation18
- necessitously21