diff --git a/ly/words.py b/ly/words.py
index 5ed701e..214f15f 100644
--- a/ly/words.py
+++ b/ly/words.py
@@ -133,8 +133,6 @@
     'bookOutputName',
     'bookOutputSuffix',
     'bp', # since 2.24
-    'bracketCloseSymbol',
-    'bracketOpenSymbol',
     'break',
     'breathe',
     'breve',
@@ -224,11 +222,6 @@
     'endSpanners',
     'episemFinis',
     'episemInitium',
-    'escapedBiggerSymbol',
-    'escapedExclamationSymbol',
-    'escapedParenthesisCloseSymbol',
-    'escapedParenthesisOpenSymbol',
-    'escapedSmallerSymbol',
     'eventChords', # since 2.23
     'expandEmptyMeasures',
     'expandFullBarRests',
@@ -362,8 +355,6 @@
     'palmMuteOff',
     'palmMuteOn',  # since 2.16
     'parallelMusic',
-    'parenthesisCloseSymbol',
-    'parenthesisOpenSymbol',
     'parenthesize',
     'partCombine',
     'partCombineApart',
@@ -389,7 +380,6 @@
     'phrasingSlurNeutral',
     'phrasingSlurSolid',
     'phrasingSlurUp',
-    'pipeSymbol',
     'pitchedTrill',
     'pointAndClickOff',
     'pointAndClickOn',
@@ -532,7 +522,6 @@
     'tieNeutral',
     'tieSolid',
     'tieUp',
-    'tildeSymbol',
     'time',
     'times',
     'timing',