- 10
- 101
- 1066
- 10-gauge
- 10x
- 16-gauge
- 1776
- 1914 to 1918
- 1939 to 1945
- 1984
- 1H
- 2.0
- .22
- 2,4,5-T
- 24/7
- 2,4-D
- 2,6-dichlorobenzonitrile
- 2D
- 2D animation
- 2D barcode
- 2G
- 2H
- 2NITE
- 30-30
- 30-dash
- 3.5G
- 38
- 38th parallel
- 3D
- 3D animation
- 3D printer
- 3D printing
- 3G
- 3H
- 401(k)
- 401(k) plan
- 404
- 411
- 420
- 45
- 4EVA
- 4-F
- 4G
- 4WD
- 4 × 4
- 52-card pickup
- 5BX
- 5G
- 606
- 78
- “800” number
- 8d
- 900 number
- 911
- 988
- -acea
- -aceae
- -aceous
- -acious
- -acity
- -acy
- -adelphous
- -ades
- -aean
- -aemia
- -agogue
- -aholic
- -ales
- -ance
- -ancy
- -androus
- -andry
- -anthous
- -anum
- -arama
- -ard
- -aris
- -arium
- -asis
- -ata
- -athon
- -atic
- -ation
- -ative
- -ator
- -atory
- -bacter
- -biont
- -biosis
- -ble
- bros.
- -bulia
- -cardium
- -carpic
- -carpous
- -cene
- -cephaly
- -chroic
- -chroous
- -cidal
- -cide
- -clase
- -clasis
- -cle
- coel-
- -coele
- -colous
- -cracy
- -cule
- -cyte
- -dactylous
- -dactyly
- -dermatous
- -dromous
- -eae
- -ean
- -ectomy
- -emia
- -ence
- -enchyma
- -ency
- -enne
- -ensis
- -eous
- -erel
- -eroo
- -ery
- -esce
- -escent
- -esis
- -esque
- -ette
- -eur
- -eus
- -euse
- -ey
- -facient
- -favoured
- -ferous
- -fex
- -fic
- -fication
- -florous
- -folious
- -fuge
- -gamous
- -genous
- -gerous
- -glot
- -gnathous
- -gnomy
- -gony
- -grapher
- gyne-
- -gynous
- -gyny
- -haemia
- -hedral
- -hemia
- -holic
- -ial
- -iana
- -iasis
- -iatrics
- -iatry
- -ibility
- -ible
- -ibly
- -ical
- -ically
- -idae
- -idia
- -idine
- -iensis
- -ier
- -iferous
- -iformes
- -ify
- -ility
- -inae
- -ing
- -ior
- -ious
- -isation
- -ise
- -ist
- -ista
- -istic
- -istical
- -istics
- -ite
- -itic
- -ition
- -itious
- -itis
- -itive
- -itol
- -ity
- -ium
- -ivus
- -ization
- -ize
- -ji
- -lagnia
- -lalia
- -lings
- -logue
- -lyte
- -machy
- -mancy
- -manship
- -masted
- -megalia
- -megaly
- -melia
- -mer
- -merous
- -metry
- -morphism
- -morphous
- -mycetes
- -mycin
- naut.
- -nik
- -noia
- -nomy
- -oate
- -ock
- -odont
- -odynia
- -oholic
- -oid
- -oidea
- -ome
- -onic
- -onium
- ont-
- -oon
- -opia
- -opsia
- -opsis
- -opsy
- -opy
- -orama
- -orexia
- -orial
- -ory
- -osis
- -ous
- -oyl
- -pagus
- -pated
- -pathia
- -pathy
- -pede
- -penia
- -pexy
- -phagia
- -phagous
- -phagy
- -phane
- -phany
- -phile
- -philiac
- -philic
- -philism
- -philous
- -phily
- -phobe
- -phore
- -phorous
- -phrenia
- -phyllous
- -phyre
- -plast
- -plasty
- -plasy
- -ploid
- -pnoea
- -poda
- -pode
- -podous
- -poietic
- -pterous
- qq. v.
- -rel
- -rhagia
- -rhiza
- -rrhaphy
- -rrhiza
- -rrhoea
- -ry
- -saur
- -saurus
- -sepalous
- -spermal
- -sporous
- -ster
- -stichous
- -stome