liaison

ExcerptCustomizer plugin replaces the ellipsis (…) with a 
custom text string (length less than 50, including space) 
with selected padding (To replace space). The excerpt string 
is easily broken in many themes if the excerpt string contains 
space. Not compatible with all themes.
<h3>Build Status</h3>
<h3>Development</h3>
<a href="https://github.com/liaisontw/excerptStuff" rel="nofollow ugc">ExcerptCustomizer</a>

Excerpt Customizer

ExcerptCustomizer plugin replaces the ellipsis (...) with a  custom text string with selected padding.  Not compatible with all themes.

Tim Eckel

Try it out on a free dummy site here => <a href="https://demo.tastewp.com/read-more-excerpt-link" rel="nofollow ugc">https://demo.tastewp.com/read-more-excerpt-link</a>
When WordPress makes an excerpt from your post content, it crops the content and adds an ellipsis […] to the end. This plugin changes the ellipsis to a Read More link to the full post content.
You can change the Read More link text to anything you wish from the Read More Excerpt submenu on the WordPress Settings menu.
Also from the Read More Excerpt submenu, you can specify the excerpt word length (WordPress defaults to 55 words).
Additionally, you can force the Read More link to show even when an excerpt is entered or when a read more tag is added to the content. This is turned on from the Read More Excerpt submenu with the Show More Frequently checkbox.
The Read More link uses the class read-more-link, so you can stylize the link any way you wish.

Excerpt Customizer vs Read More Excerpt Link