Any words beginning with j

Yes. In fact there are 1,480 Words beginning with 'j' in the Scrabble dictionary. Here are 50:

jab

jabber

jabberer

jabot

jacaranda

jack

jackal

jackass

jackboot

jackdaw

jacket

jacketed

jackhammer

jackknife

jackknives

jackpot

jackrabbit

jacks

jackstraw

jacquard

jade

jaded

jadedly

jadedness

jadeite

jag

jagged

jaggedly

jaggedness

jaguar

jail

jailbird

jailbreak

jailer

jailor

jalapeno

jalopy

jalousie

jam

jamb

jambalaya

jamboree

jammed

jangle

jangler

janitor

janitorial

Japan

jape