The <del> tag is used for markup of deleted text.

Markup of deleted text can be useful in determining differences between multiple versions of the same document. Browsers will normally strike a line through deleted text and underline inserted text.

Example Code:
<p>My favorite color is <del>blue</del> <ins>green</ins>!</p>

My favorite color is blue red!

Attribute Definition
cite Specifies a URL to a document which explains why the text was deleted.
datename Specifies the date and time when the text was deleted.
Global Attributes:

The <del> tag also supports the Global Attributes in HTML5

Event Attributes:

The <del> tag also supports the Event Attributes in HTML5