diff --git a/components/inflector.rst b/components/inflector.rst
index 5e9f4325884..c42d6ebaeaa 100644
--- a/components/inflector.rst
+++ b/components/inflector.rst
@@ -5,60 +5,8 @@
 The Inflector Component
 =======================
 
-    The Inflector component converts English words between their singular and
-    plural forms.
+.. deprecated:: 5.1
 
-Installation
-------------
-
-.. code-block:: terminal
-
-    $ composer require symfony/inflector
-
-.. include:: /components/require_autoload.rst.inc
-
-When you May Need an Inflector
-------------------------------
-
-In some scenarios such as code generation and code introspection, it's usually
-required to convert words from/to singular/plural. For example, if you need to
-know which property is associated with an *adder* method, you must convert from
-plural to singular (``addStories()`` method -> ``$story`` property).
-
-Although most human languages define simple pluralization rules, they also
-define lots of exceptions. For example, the general rule in English is to add an
-``s`` at the end of the word (``book`` -> ``books``) but there are lots of
-exceptions even for common words (``woman`` -> ``women``, ``life`` -> ``lives``,
-``news`` -> ``news``, ``radius`` -> ``radii``, etc.)
-
-This component abstracts all those pluralization rules so you can convert
-from/to singular/plural with confidence. However, due to the complexity of the
-human languages, this component only provides support for the English language.
-
-Usage
------
-
-The Inflector component provides two static methods to convert from/to
-singular/plural::
-
-    use Symfony\Component\Inflector\Inflector;
-
-    Inflector::singularize('alumni');   // 'alumnus'
-    Inflector::singularize('knives');   // 'knife'
-    Inflector::singularize('mice');     // 'mouse'
-
-    Inflector::pluralize('grandchild'); // 'grandchildren'
-    Inflector::pluralize('news');       // 'news'
-    Inflector::pluralize('bacterium');  // 'bacteria'
-
-Sometimes it's not possible to determine a unique singular/plural form for the
-given word. In those cases, the methods return an array with all the possible
-forms::
-
-    use Symfony\Component\Inflector\Inflector;
-
-    Inflector::singularize('indices'); // ['index', 'indix', 'indice']
-    Inflector::singularize('leaves');  // ['leaf', 'leave', 'leaff']
-
-    Inflector::pluralize('matrix');    // ['matricies', 'matrixes']
-    Inflector::pluralize('person');    // ['persons', 'people']
+    The Inflector component was deprecated in Symfony 5.1 and its code was moved
+    into the :doc:`String </components/string>` component.
+    :ref:`Read the new Inflector docs <string-inflector>`.
diff --git a/components/string.rst b/components/string.rst
index 24d83df2b88..3092ddfaa55 100644
--- a/components/string.rst
+++ b/components/string.rst
@@ -507,6 +507,44 @@ the injected slugger is the same as the request locale::
         }
     }
 
+.. _string-inflector:
+
+Inflector
+---------
+
+..versionadded:: 5.1
+
+    The inflector feature was introduced in Symfony 5.1.
+
+In some scenarios such as code generation and code introspection, you need to
+convert words from/to singular/plural. For example, to know the property
+associated with an *adder* method, you must convert from plural
+(``addStories()`` method) to singular (``$story`` property).
+
+Most human languages have simple pluralization rules, but at the same time they
+define lots of exceptions. For example, the general rule in English is to add an
+``s`` at the end of the word (``book`` -> ``books``) but there are lots of
+exceptions even for common words (``woman`` -> ``women``, ``life`` -> ``lives``,
+``news`` -> ``news``, ``radius`` -> ``radii``, etc.)
+
+This component provides an :class:`Symfony\\Component\\String\\Inflector\\EnglishInflector`
+class to convert English words from/to singular/plural with confidence::
+
+    use Symfony\Component\String\Inflector\EnglishInflector;
+
+    $inflector = new EnglishInflector();
+
+    $result = $inflector->singularize('teeth');   // ['tooth']
+    $result = $inflector->singularize('radii');   // ['radius']
+    $result = $inflector->singularize('leaves');  // ['leaf', 'leave', 'leaff']
+
+    $result = $inflector->pluralize('bacterium'); // ['bacteria']
+    $result = $inflector->pluralize('news');      // ['news']
+    $result = $inflector->pluralize('person');    // ['persons', 'people']
+
+The value returned by both methods is always an array because sometimes it's not
+possible to determine a unique singular/plural form for the given word.
+
 .. _`ASCII`: https://en.wikipedia.org/wiki/ASCII
 .. _`Unicode`: https://en.wikipedia.org/wiki/Unicode
 .. _`Code points`: https://en.wikipedia.org/wiki/Code_point