diff --git a/kjvstudy_org/server.py b/kjvstudy_org/server.py
index bd17f5b..6508d21 100644
--- a/kjvstudy_org/server.py
+++ b/kjvstudy_org/server.py
@@ -937,6 +937,29 @@ def link_verse_references_in_text(text):
 templates.env.filters['link_verses'] = link_verse_references_in_text
 
 
+def inject_word_markers(text, word_studies, verse_num):
+    """Inject sidenote markers into verse text next to annotated words"""
+    if not word_studies:
+        return text
+
+    # Process each word study
+    for idx, study in enumerate(word_studies, 1):
+        word = study['word']
+        # Create the sidenote marker HTML
+        marker = f'<label for="sn-{verse_num}-word-{idx}" class="margin-toggle sidenote-number"></label><input type="checkbox" id="sn-{verse_num}-word-{idx}" class="margin-toggle"/><span class="sidenote"><strong>{word}:</strong> {study["term"]} (<em>{study["translit"]}</em>). {study["note"]}</span>'
+
+        # Find and replace the word with word + marker
+        # Use a more precise replacement to avoid replacing partial matches
+        import re
+        # Match the word with word boundaries, case-insensitive
+        pattern = re.compile(r'\b(' + re.escape(word) + r')\b', re.IGNORECASE)
+        text = pattern.sub(r'\1' + marker, text, count=1)
+
+    return text
+
+templates.env.filters['inject_word_markers'] = inject_word_markers
+
+
 @app.get("/biblical-timeline", response_class=HTMLResponse)
 def biblical_timeline_page(request: Request):
     """Biblical timeline page showing major biblical events chronologically"""
diff --git a/kjvstudy_org/templates/chapter.html b/kjvstudy_org/templates/chapter.html
index 4f3e373..1eb4112 100644
--- a/kjvstudy_org/templates/chapter.html
+++ b/kjvstudy_org/templates/chapter.html
@@ -169,7 +169,7 @@ hr::before {
     {% for verse in verses %}
     {% set commentary = commentaries[verse.verse] if commentaries and verse.verse in commentaries else none %}
     <p id="verse-{{ verse.verse }}">
-        <a href="/book/{{ book }}/chapter/{{ chapter }}/verse/{{ verse.verse }}" class="verse-number-link">{{ verse.verse }}</a> {{ verse.text | link_names | safe }}
+        <a href="/book/{{ book }}/chapter/{{ chapter }}/verse/{{ verse.verse }}" class="verse-number-link">{{ verse.verse }}</a> {{ verse.text | inject_word_markers(commentary.word_studies if commentary else [], verse.verse) | link_names | safe }}
         {% if commentary %}
             {% if commentary.cross_references %}
                 {% for ref in commentary.cross_references %}