Flector

Truncate Comments is a plugin that hides a part of a long comment under a “Read more” link that, when clicked, reveals the hidden part of the comment. The plugin provides the functionality of Amazon.com comments.
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The plugin uses <a href="http://www.aakashweb.com/jquery-plugins/collapser/" rel="nofollow ugc">jQuery Collapser</a> by Aakash Chakravarthy.

Truncate Comments

The plugin uses Javascript to hide long comments (Amazon-style comments).

xgenious

Display XG Accordion anywhere in your wordpress site using XG Accordion plugin shortcodes. it has build in support for popuplar page builder like Elementor and Wpbakery Page Builder. 
 
CHECK XG Accordion[FREE] DEMOS 
<a href="https://plugins.xgenious.com/faq/land/" rel="nofollow ugc">XG Accordion Demo</a>

XG Accordion Pro Plugin[PAID] Demos 
 <a href="https://codecanyon.net/item/accordion-faq-wordpress-plugin/22692611" rel="nofollow ugc">Pro Version Demo</a> (it give a pro version of plugin file.) 

AWESOME FEATURES
<ul>
<li> Add XG Accordion using shortcode as your requirements</li>
<li> 05 unique design</li>
<li>Drag & Drop Ordering</li>
<li>Unlimited color options</li>
<li>Typography options</li>
<li>Easy to customize with plugin Options</li>
<li>fully responsive</li>
<li>Cross browser support</li>
</ul>
XG Accordion Pro [PAID] Features
<ul>
<li>22 Unique tabs Styles * More Style Coming Soon!</li>
<li>Category wise product slider </li>
<li>Drag & Drop Ordering</li>
<li>Limit To Display number of accordion</li>
<li>Responsive Design</li>
<li>Fully Customizeable</li>
<li>Typography Options</li>
<li>Unlimited Color Scheme</li>
<li>Build in support for Elementor</li>
<li>Build in suppor for Wpbakery Page Builder</li>
<li>100% Multi Language </li>
<li>Smooth hover effect</li>
<li>All Browser Supported</li>
<li>All Browser Supported</li>
<li>Compatible latest version WordPress</li>
<li>Cross browser support</li>
<li>Clean Coding, W3c Validate</li>
<li>24/7 First Support</li>
<li> Step by Step Well Documented</li>
</ul>

XG Accordion

XG Accordion is a modern Plugin. It's have 05 styles with huge option. You can use this to make easily Accordion on your website easily.

Truncate Comments vs XG Accordion