get rid of (someone or something)
To discard, eliminate, or become free from something or someone. We finally got rid of your younger brother, he's so annoying! Would you please get rid of that filthy couch already?
rid out
(chiefly Midwestern United States) To clean, empty, or clear out (something or some space). Primarily heard in US. You've got to learn to rid out some of these negative thoughts you've been having, and make room for some positive emotions. I'll be spending this weekend ridding out the garage.
rid up
(chiefly Midwestern United States) To clean or tidy up; to empty or clear out (something or some space). Primarily heard in US. When we were growing up, we were all expected to help rid up after each meal. I'll be spending this weekend ridding up the garage.
be rid of
To separate oneself from something or someone else. I'm so glad to be rid of that project. It had so many parts and felt like a burden for weeks! Thank God we're finally rid of our houseguests and can go back to living our normal lives!