Greek and Latin roots in English_J

Root	Meaning in English	Origin language	Etymology (root origin)	English examples
jac-	lie	Latin	jacēre "to be thrown"	adjacent
jac-, -ject-	cast, throw	Latin	jacere (also spelled iacere), iectus	adagio, adjacent, deject, ejaculate, eject, inject, interject, project, reject, trajectory
janu-	door	Latin	janua	janitor, January
joc-	joke	Latin	jocus (also spelled iocus)	jocose, jocular, jocularity, jocund, jocundity, joke
judic-	judge	Latin	judex, iudicis	adjudicate, judicial, judiciary
jug-	yoke	Latin	jugare, jugum	conjugal, subjugate
jung-, junct-	join	Latin	iungere, junctus	conjunction, enjoin, injunction, juncture, join, junction
junior-	younger	Latin	junior	junior, juniority
jus-, jur-	law, justice	Latin	ius, iuris	abjure, jurisprudence, jury, just, justice, objurgate, perjury
juv-, jut-	help	Latin	juvare, jutus	adjutant
juven-	young, youth	Latin	juvenis	juvenile, rejuvenate
juxta-	beside, near	Latin	juxta	juxtaposition