- .22
- .45
- .com
- `Asi
- 'A' game
- 'appen
- 'burbs
- 'cause
- 'cept
- 'd
- 'em
- 'fro
- 'gainst
- 'grammable
- 'hood
- 'Istrian
- 'll
- 'm
- 'Merica
- 'Merican
- 'mongst
- 'n
- 'Ndrangheta
- 'nuff
- 'que
- 're
- 'roo
- 's
- -'s
- 'sblood
- 'sdeath
- 's Gravenhage
- 's Hertogenbosch
- 'shun
- 'splain
- 'swounds
- 't
- 'til
- 'tis
- 'tude
- 'twas
- 'tween
- 'tween deck
- 'twere
- 'twill
- 'twixt
- 'twould
- 'un
- 've
- 'zine
- ©
- 10
- 101
- 1066
- 10-gauge
- 10x
- 16-gauge
- 1776
- 1914 to 1918
- 1939 to 1945
- 1984
- 1H
- 2,4,5-T
- 2,4-D
- 2,6-dichlorobenzonitrile
- 2.0
- 24/7
- 2D
- 2D animation
- 2D barcode
- 2FA
- 2G
- 2H
- 2NITE
- 3.5G
- 30-30
- 30-dash
- 38
- 38th parallel
- 3D
- 3D animation
- 3D printer
- 3D printing
- 3G
- 3H
- 4 × 4
- 401(k)
- 401(k) plan
- 404
- 411
- 419
- 420
- 45
- 4EVA
- 4-F
- 4G
- 4-H
- 4K TV
- 4WD
- 52-card pickup
- 5BX
- 5G
- 606
- 78
- 8d
- 9/11
- 900 number
- 911
- 9-11
- 988
- -a
- -ability
- -able
- -ably
- -ac
- -acea
- -aceae
- -aceous
- –aceous
- -acious
- -acity
- -acy
- -ad
- -ade
- -adelphous
- -ades
- Æ
- -aea
- -aean
- Ælfric
- -aemia
- Æthelbert
- Æthelred I
- Æthelred II
- Æthelwulf
- -age
- -agog
- -agogue
- -aholic
- -aire
- -al
- -ales
- -algia
- -algy
- -alis
- -ally
- -ama
- -amine
- -an
- -ana
- -ance
- -ancy
- -and
- -androus
- -andry
- -ane
- –ane
- -ant
- -anthous
- -anum
- -anus
- -ar
- -arama
- -arch
- -archy
- -ard
- -aria
- -arian
- -aris
- -arium
- -art
- -ary
- -ase
- –ase
- -asis
- -ass
- -ast
- -aster
- -ata
- -ate
- -athon
- -atic
- -ation
- -ative
- -ator
- -atory
- -bacter
- -baiting
- -bashing
- -biont
- -biosis
- -blast
- -blastic
- -ble
- -bodied
- -bound
- -branch
- -browed
- -bulia
- -burger
- -cade
- -cam
- -cardia
- -cardium
- -carp
- -carpic
- -carpous
- -ce
- -cele
- -cene
- -centric
- -century
- -cephalic
- -cephalous
- -cephalus
- -cephaly
- -chore
- -chroic
- -chrome
- -chroous
- -cidal
- -cide
- –cide
- -cion
- -clase
- -clasis
- -cle
- -cline
- -coccal
- -coccus
- -coele
- -colous
- -core
- -corn
- -cosm
- -cracy
- -crat
- -cule
- -cy
- -cyst
- -cyte
- -dactyl
- -dactylous
- -dactyly
- -decker
- -dendron
- -derm
- -derma
- -dermatous
- -dermis
- -des
- -desis
- -diene
- -dom
- -drome
- -dromous
- -ea
- -eae
- -ean
- -ectomy
- -ed
- -ee
- -eer
- -ella
- -elle
- -eme
- -emia
- -en
- -ence
- -enchyma
- -ency
- -end
- -ene
- –ene
- -enne
- -ensis
- -ent
- -eous
- -er
- -erel
- -ergic
- -ern
- -eroo
- -ers
- -ery
- -es
- -esce
- -escence
- -escent
- -ese
- -esis
- -esque
- -ess
- -est
- -et
- -eth
- -etic
- -ette
- -eum
- -eur