diff --git a/.eleventy.js b/.eleventy.js
index 91f37979..3bb4af2c 100644
--- a/.eleventy.js
+++ b/.eleventy.js
@@ -1,10 +1,22 @@
+const makeItemLink = (slug) => `#${slug}`
+
 module.exports = function (config) {
   // Add a filter using the Config API
-  config.addFilter('linkTarget', (slug) => `#${slug}`);
+  config.addFilter('linkTarget', makeItemLink);
 
+  config.addFilter('linkIfExistsInCollection', (word, collection) => {
+    const existingDefintion = collection.find(item => item.data.title === word)
+
+    if (existingDefintion) {
+      return `<a href=${makeItemLink(existingDefintion.data.slug)}>${word}</a>`
+    }
+
+    return word
+  })
+
+  // just a debug filter to lazily inspect the content of anything in a template
   config.addFilter('postInspect', function (post) {
     console.log(post);
-
   })
 
   config.addPassthroughCopy({'_site/css/': 'assets/css/'})
diff --git a/11ty/_includes/components/definition.njk b/11ty/_includes/components/definition.njk
index b02c14e7..a2ce3639 100644
--- a/11ty/_includes/components/definition.njk
+++ b/11ty/_includes/components/definition.njk
@@ -10,7 +10,7 @@
       <h4>Alt words</h4>
       <ul class="list-semicolon">
         {% for word in definition.data.alt_words %}
-          <li>{{ word }}</li>
+          <li>{{ word | linkIfExistsInCollection(collections.definedWords) | safe }}</li>
         {% endfor %}
       </ul>
     {% endif %}