ject throw eject – to throw someone/something out; interject – to throw a remark into a discussion; project – to cast or throw something.

jud law judgment – a decision of a court of law; judicial – having to do with judges or courts of law; judiciary – a system of courts of law.

junct join conjunction – a word that joins parts of sentences; disjunction – a disconnection; junction – a place where two things join.

juven young juvenile – youthful or childish; rejuvenate – to bring back to youthful strength or appearance.