- Jerusalem thorn
- jujube bush
- jaunty
- jar
- jurisprudence
- jazz around
- jest
- jocularity
- juicy
- just
- justness
- judiciary
- jaundice
- jolt
- jasminum sambac
- jasminum
- jealous
- je ne sais quoi
- jealously
- jeer
- jennet
- jenny
- jenny ass
- jeopardize
- jerk
- jupiter
- juridic
- jury box
- journal bearing
- joy
- joyful
- joyless
- jubilate
- jubilation
- jubilant
- judgement
- judicature
- judicial branch
- judicial decision
- jugglery
- july
- jumpy
- junket
- jesus of nazareth
- jinx
- John Barleycorn
- jut
- Jew
- juxtaposition
- joist