- j
- J/A
- jab
- jabber
- jack
- jack knife
- jack plug
- jackal
- jackdaw
- jacket
- jacket potato
- jackhammer
- jack-in-the-box
- jack-of-all-trades
- jackpot
- Jacobean
- Jacuzzi®
- jade
- jaded
- jagged
- jaguar
- jail
- jailbird
- jailbreak
- jailer
- jam
- jam session
- Jamaica
- Jamaican
- jamb
- jamming
- jam-packed
- Jan.
- jangle
- janitor
- January
- Japan
- Japanese
- jape
- jar
- jargon
- jarring
- jasmine
- jaundice
- jaundiced
- jaunt
- jaunty
- Java
- javelin
- jaw
- jawbone
- jay
- jaywalk
- jaywalker
- jazz
- jazzy
- JCR
- jealous
- jealously
- jealousy
- jeans
- Jeep®
- jeer
- jeering
- Jello®
- jelly
- jelly baby
- jelly bean
- jellyfish
- jemmy
- jeopardize
- jeopardy
- jerk
- jerkily
- jerkin
- jerky
- jerry can
- jerry-built
- jersey
- Jersey
- Jerusalem
- Jerusalem artichoke
- jest
- jester
- Jesuit
- Jesus
- jet
- jet engine
- jet lag
- jet set
- jet-black
- jetfoil
- jet-propelled
- jetsam
- jettison
- jetty
- Jew
- jewel
- jeweller
- jewellery
- Jewish
- JFK
- jib
- jibe
- jiffy
- Jiffy bag®
- jig
- jiggle
- jigsaw
- jilt
- jimmy
- jingle
- jingoism
- jinx
- jinxed
- jitters
- jittery
- jive
- job
- job centre
- job creation scheme
- job description
- job lot
- job satisfaction
- job security
- jobbing
- jobless
- jobsharing
- Joburg
- jockey
- jockstrap
- jocular
- jodhpurs
- Joe Public
- jog
- jogger
- jogging
- joggle
- Johannesburg
- john
- John Hancock
- join
- joiner
- joinery
- joint
- joint account
- Joint Chiefs of Staff
- joint ownership
- joint venture
- jointly
- joint-stock company
- joist
- joke
- joker
- jollity
- jolly
- jolt
- Joneses
- Jordan
- Jordanian
- joss stick
- jostle
- jot
- jotter
- jottings
- journal
- journalese
- journalism
- journalist
- journey
- joust
- jovial
- jowls
- joy
- joyful
- joyfully
- joyous
- joyously
- joypad
- joyride
- joyrider
- joystick
- JP
- Jr.
- jubilant
- jubilation
- jubilee
- Judaism
- judder
- judge
- judgment
- judgmental
- judicial
- judiciary
- judicious
- judo
- jug
- juggernaut
- juggle
- juggler