diff --git a/concept.py b/concept.py
index 9c890e1..1897433 100644
--- a/concept.py
+++ b/concept.py
@@ -461,6 +461,9 @@ class IndexAttributes(object):
             return getName(self.context)
         return id
 
+    def keywords(self):
+        if self.adaptedIndexAttributes is not None:
+            return self.adaptedIndexAttributes.keywords()
 
 # events
 
diff --git a/expert/query.py b/expert/query.py
index 3519deb..ab9f2b6 100644
--- a/expert/query.py
+++ b/expert/query.py
@@ -43,6 +43,7 @@ textIndex = ('', 'loops_text')
 typeIndex = ('', 'loops_type')
 identifierIndex = ('', 'loops_identifier')
 stateIndex = ('', 'loops_state')
+keywordsIndex = ('', 'loops_keywords')
 
 
 # standard text/field/keyword index queries
@@ -73,6 +74,18 @@ def State(statesDefinition, value):
         value = [value]
     return AnyOf(stateIndex, [':'.join((statesDefinition, v)) for v in value])
 
+@implementer(IQuery)
+def KeywordsAllOff(statesDefinition, value):
+    if not isinstance(value, (list, tuple)):
+        value = [value]
+    return AllOf(keywordsIndex, [':'.join((statesDefinition, v)) for v in value])
+
+@implementer(IQuery)
+def KeywordsAnyOff(statesDefinition, value):
+    if not isinstance(value, (list, tuple)):
+        value = [value]
+    return AnyOf(keywordsIndex, [':'.join((statesDefinition, v)) for v in value])
+
 
 # concept map queries