Wrangler front end trouble

Hi there everyone...

I'm a new owner of a 2000 wrangler sport with about 44,000 miles on it. Recently, when decelerating from a high speed or when traveling on uneven terrain, my front end seems to shake violently back and forth. Does anyone have a clue what might be going on??? Help me please!!

thanks!

First check the lug nuts, they should be tight. Then check that the tires/wheels are balanced. If it still does it, have the front end re-alighned