diff --git a/core/lib/Drupal/Core/Template/TwigExtension.php b/core/lib/Drupal/Core/Template/TwigExtension.php
index 511cefb..5d8fb48 100644
--- a/core/lib/Drupal/Core/Template/TwigExtension.php
+++ b/core/lib/Drupal/Core/Template/TwigExtension.php
@@ -92,7 +92,6 @@ public function getFilters() {
       // "raw" filter and give it identifiable names. These filters should only
       // be used in "trans" tags.
       // @see TwigNodeTrans::compileString()
-      new \Twig_SimpleFilter('passthrough', 'twig_raw_filter', array('is_safe' => array('html'))),
       new \Twig_SimpleFilter('placeholder', 'twig_raw_filter', array('is_safe' => array('html'))),
 
       // Replace twig's escape filter with our own.
diff --git a/core/lib/Drupal/Core/Template/TwigNodeTrans.php b/core/lib/Drupal/Core/Template/TwigNodeTrans.php
index ea51846..9809f71 100644
--- a/core/lib/Drupal/Core/Template/TwigNodeTrans.php
+++ b/core/lib/Drupal/Core/Template/TwigNodeTrans.php
@@ -149,9 +149,6 @@ protected function compileString(\Twig_NodeInterface $body) {
           $argPrefix = '@';
           while ($args instanceof \Twig_Node_Expression_Filter) {
             switch ($args->getNode('filter')->getAttribute('value')) {
-              case 'passthrough':
-                $argPrefix = '!';
-                break;
               case 'placeholder':
                 $argPrefix = '%';
                 break;
diff --git a/core/modules/forum/templates/forum-submitted.html.twig b/core/modules/forum/templates/forum-submitted.html.twig
index f679363..5743171 100644
--- a/core/modules/forum/templates/forum-submitted.html.twig
+++ b/core/modules/forum/templates/forum-submitted.html.twig
@@ -17,7 +17,7 @@
  */
 #}
 {% if time %}
-  <span class="submitted">{% trans %}By {{ author|passthrough }} {{ time }} ago{% endtrans %}</span>
+  <span class="submitted">{% trans %}By {{ author|raw }} {{ time }} ago{% endtrans %}</span>
 {% else %}
   {{ 'n/a'|t }}
 {% endif %}
diff --git a/core/modules/node/templates/node.html.twig b/core/modules/node/templates/node.html.twig
index a78fcb3..917c7c0 100644
--- a/core/modules/node/templates/node.html.twig
+++ b/core/modules/node/templates/node.html.twig
@@ -92,7 +92,7 @@
     <footer class="node__meta">
       {{ author_picture }}
       <div{{ author_attributes.addClass('node__submitted') }}>
-        {% trans %}Submitted by {{ author_name|passthrough }} on {{ date|passthrough }}{% endtrans %}
+        {% trans %}Submitted by {{ author_name|raw }} on {{ date|raw }}{% endtrans %}
         {{ metadata }}
       </div>
     </footer>
diff --git a/core/modules/system/src/Tests/Theme/TwigTransTest.php b/core/modules/system/src/Tests/Theme/TwigTransTest.php
index 7f21b2d..9dcf06f 100644
--- a/core/modules/system/src/Tests/Theme/TwigTransTest.php
+++ b/core/modules/system/src/Tests/Theme/TwigTransTest.php
@@ -119,11 +119,6 @@ public function testTwigTransTags() {
     );
 
     $this->assertRaw(
-      'PAS-THRU: &"<>',
-      '{{ token|passthrough }} was successfully translated and prefixed with "!".'
-    );
-
-    $this->assertRaw(
       'PLAYSHOLDR: <em class="placeholder">&amp;&quot;&lt;&gt;</em>',
       '{{ token|placeholder }} was successfully translated and prefixed with "%".'
     );
@@ -188,7 +183,6 @@ protected function checkForDebugMarkup($visible) {
       '{{ "Hello moon."|trans }}' => '<!-- TRANSLATION: "Hello moon." -->',
       '{% trans %} with {% plural %}' => '<!-- TRANSLATION: "Hello star.", PLURAL: "Hello @count stars." -->',
       '{{ token }}' => '<!-- TRANSLATION: "Escaped: @string" -->',
-      '{{ token|passthrough }}' => '<!-- TRANSLATION: "Pass-through: !string" -->',
       '{{ token|placeholder }}' => '<!-- TRANSLATION: "Placeholder: %string" -->',
       '{{ complex.tokens }}' => '<!-- TRANSLATION: "This @token.name has a length of: @count. It contains: %token.numbers and @token.bad_text. Lets pass the bad text through: !token.bad_text." -->',
       '{% trans with {"context": "Lolspeak"} %}I have context.{% endtrans %}' => '<!-- TRANSLATION: "I have context.", CONTEXT: "Lolspeak" -->',
diff --git a/core/modules/system/tests/modules/twig_theme_test/templates/twig_theme_test.trans.html.twig b/core/modules/system/tests/modules/twig_theme_test/templates/twig_theme_test.trans.html.twig
index 2f4dda0..a29110b 100644
--- a/core/modules/system/tests/modules/twig_theme_test/templates/twig_theme_test.trans.html.twig
+++ b/core/modules/system/tests/modules/twig_theme_test/templates/twig_theme_test.trans.html.twig
@@ -49,7 +49,7 @@
 </div>
 <div>
   {% trans %}
-    Pass-through: {{ string|passthrough }}
+    Raw: {{ string|raw}}
   {% endtrans %}
 </div>
 <div>
@@ -63,7 +63,7 @@
 {% set count = token|length %}
 <div>
   {% trans %}
-    This {{ token.name }} has a length of: {{ count }}. It contains: {{ token.numbers|placeholder }} and {{ token.bad_text }}. Lets pass the bad text through: {{ token.bad_text|passthrough }}.
+    This {{ token.name }} has a length of: {{ count }}. It contains: {{ token.numbers|placeholder }} and {{ token.bad_text }}. Lets pass the bad text through: {{ token.bad_text|raw }}.
   {% endtrans %}
 </div>
 
diff --git a/core/modules/update/templates/update-project-status.html.twig b/core/modules/update/templates/update-project-status.html.twig
index 04ab882..724da19 100644
--- a/core/modules/update/templates/update-project-status.html.twig
+++ b/core/modules/update/templates/update-project-status.html.twig
@@ -110,10 +110,10 @@
 
   {% if base_themes %}
     {% set basethemes = base_themes|join(', ') %}
-    {# Using passthrough since placeholder is already applied in preprocess. #}
+    {# Using raw since placeholder is already applied in preprocess. #}
     <div class="basethemes">
       {% trans %}
-        Depends on: {{ basethemes|passthrough }}
+        Depends on: {{ basethemes|raw }}
       {% endtrans %}
     </div>
   {% endif %}
diff --git a/core/themes/bartik/templates/node.html.twig b/core/themes/bartik/templates/node.html.twig
index b390681..3701696 100644
--- a/core/themes/bartik/templates/node.html.twig
+++ b/core/themes/bartik/templates/node.html.twig
@@ -86,7 +86,7 @@
       <div class="node__meta">
         {{ author_picture }}
         <span{{ author_attributes }}>
-          {% trans %}Submitted by {{ author_name|passthrough }} on {{ date|passthrough }}{% endtrans %}
+          {% trans %}Submitted by {{ author_name|raw }} on {{ date|raw }}{% endtrans %}
         </span>
         {{ metadata }}
       </div>