How to edit wordpress post without republishing

No… Your users won’t receive the post again in their feeds when you click update button. That’s how WordPress works.

So don’t be afraid to click update button

Dashboard -> All Posts -> Edit -> Make changes -> Click update button

PS: If you still afraid, do a little experiment.

By default your feed url looks like this.

http://yourwebsite.com/feed/

Go to that url. Note the first 5 feed url.

Now edit the post of your 2nd feed url, make some changes and click update button..

Visit your feed page again. See.. Your post not appearing again.