- justness
- Judaism
- judiciary
- jostle
- jactation
- jerboa
- jasper
- javanese
- jaws
- jealous
- jeans
- jehad
- jellyfish
- jennet
- jenny
- jeopard
- jeremiah
- jeopardize
- jericho
- jupiter
- jurassic
- jury mast
- journalese
- jove
- joy
- judder
- judgment
- judicature
- judicial review
- jugglery
- julian
- julienne
- jump at
- jump ship
- jumpy
- junoesque
- juno
- junior
- jet plane
- jingoism
- jinx
- jut
- jointer
- jet stream
- jitney
- jokester
- joist
- jolting
- jocular
- jogging