diff --git a/commits.xml b/commits.xml
index 918911603..3247d9f3d 100644
--- a/commits.xml
+++ b/commits.xml
@@ -515,7 +515,7 @@ in serialized HTML output.
 Submitted by:	Brian Minchau<br/>
 Reviewed by:	Henry Zongaro<br/>
 Backing out the last code change by Arun because it breaks the smoketest.
-The code I am backing out is definately wrong.  The old code appears
+The code I am backing out is definitely wrong.  The old code appears
 to be correct to both myself and Henry Zongaro.<br/>
 
 Waiting for a testcase to see what is wrong with the serialization code
@@ -2417,7 +2417,7 @@ This change was reviewed and approved in XALANJ-2170 by Christine Li.
 <DateCommitted>2005/07/19</DateCommitted>
 <Modified> xml-xalan/java build.bat build.sh build.xml</Modified>
 <Log>
-Updates to the build scripts and Ant build.xml file to accomodate the
+Updates to the build scripts and Ant build.xml file to accommodate the
 restructuring of the tools and runtime libraries in xml-xalan/java/tools and
 xml-xalan/java/lib.    Also changes to build.xml to reflect upcoming
 Xalan Java 2.7.0 (version number) changes.<br/>
diff --git a/src/org/apache/xalan/xsltc/compiler/SyntaxTreeNode.java b/src/org/apache/xalan/xsltc/compiler/SyntaxTreeNode.java
index 54206b644..4c4a78bef 100644
--- a/src/org/apache/xalan/xsltc/compiler/SyntaxTreeNode.java
+++ b/src/org/apache/xalan/xsltc/compiler/SyntaxTreeNode.java
@@ -246,7 +246,7 @@ protected void addPrefixMapping(String prefix, String uri) {
      * Returns any namespace URI that is in scope for a given prefix. This
      * method checks namespace mappings for this element, and if necessary
      * for ancestor elements as well (ie. if the prefix maps to an URI in this
-     * scope then you'll definately get the URI from this method).
+     * scope then you'll definitely get the URI from this method).
      * @param prefix Namespace prefix.
      * @return Namespace URI.
      */
@@ -344,7 +344,7 @@ protected final boolean isDummy() {
 
     /**
      * Get the import precedence of this element. The import precedence equals
-     * the import precedence of the stylesheet in which this element occured.
+     * the import precedence of the stylesheet in which this element occurred.
      * @return The import precedence of this syntax tree node.
      */
     protected int getImportPrecedence() {
diff --git a/src/org/apache/xml/serializer/EncodingInfo.java b/src/org/apache/xml/serializer/EncodingInfo.java
index 840405b2f..4021fcb28 100644
--- a/src/org/apache/xml/serializer/EncodingInfo.java
+++ b/src/org/apache/xml/serializer/EncodingInfo.java
@@ -66,7 +66,7 @@ public final class EncodingInfo extends Object
      * and working up to m_highCharInContiguousGroup.
      * <p>
      * This is the char for which chars at or below this value are 
-     * definately in the encoding, although for chars
+     * definitely in the encoding, although for chars
      * above this point they might be in the encoding.
      * This exists for performance, especially for ASCII characters
      * because for ASCII all chars in the range '\u0001' to '\u007F' 
diff --git a/src/org/apache/xml/serializer/Encodings.properties b/src/org/apache/xml/serializer/Encodings.properties
index f1da1dbc1..b6a313ae3 100644
--- a/src/org/apache/xml/serializer/Encodings.properties
+++ b/src/org/apache/xml/serializer/Encodings.properties
@@ -23,7 +23,7 @@
 # 2) A comma separated list of the MIME names for the encoding,
 #    with the first one being the preferred MIME name.
 # 3) An optional high char. Characters at or below this value are
-#    definately in the encoding, but characters above it may or may not be.
+#    definitely in the encoding, but characters above it may or may not be.
 #    This value is given only for performance reasons.
 #    A value of zero is the same as no value at all.
 #