diff --git a/platform/syntax/syntax-api/api-dump-experimental.txt b/platform/syntax/syntax-api/api-dump-experimental.txt
index e7bbeb32820c..5294c4600f57 100644
--- a/platform/syntax/syntax-api/api-dump-experimental.txt
+++ b/platform/syntax/syntax-api/api-dump-experimental.txt
@@ -32,8 +32,11 @@
 - containsAll(java.util.Collection):Z
 - f:containsNullable(com.intellij.platform.syntax.SyntaxElementType):Z
 - getSize():I
+- f:intersect(com.intellij.platform.syntax.SyntaxElementTypeSet):com.intellij.platform.syntax.SyntaxElementTypeSet
 - isEmpty():Z
 - iterator():java.util.Iterator
+- f:minus(com.intellij.platform.syntax.SyntaxElementType):com.intellij.platform.syntax.SyntaxElementTypeSet
+- f:minus(java.lang.Iterable):com.intellij.platform.syntax.SyntaxElementTypeSet
 - f:plus(com.intellij.platform.syntax.SyntaxElementType):com.intellij.platform.syntax.SyntaxElementTypeSet
 - f:plus(java.lang.Iterable):com.intellij.platform.syntax.SyntaxElementTypeSet
 - remove(java.lang.Object):Z
diff --git a/platform/syntax/syntax-api/src/com/intellij/platform/syntax/SyntaxElementTypeSet.kt b/platform/syntax/syntax-api/src/com/intellij/platform/syntax/SyntaxElementTypeSet.kt
index ccbe05e70cae..905516dad3ab 100644
--- a/platform/syntax/syntax-api/src/com/intellij/platform/syntax/SyntaxElementTypeSet.kt
+++ b/platform/syntax/syntax-api/src/com/intellij/platform/syntax/SyntaxElementTypeSet.kt
@@ -68,4 +68,21 @@ class SyntaxElementTypeSet internal constructor(
     if (other in this) return this
     return setOf(*tokens, other).asSyntaxElementTypeSet()
   }
+
+  operator fun minus(other: Iterable<SyntaxElementType>): SyntaxElementTypeSet {
+    val newSet = tokens.toSet() - other.toSet()
+    if (newSet.size == size) return this // no removed elements
+    return newSet.asSyntaxElementTypeSet()
+  }
+
+  operator fun minus(other: SyntaxElementType): SyntaxElementTypeSet {
+    if (other !in this) return this
+    return (setOf(*tokens) - other).asSyntaxElementTypeSet()
+  }
+
+  fun intersect(other: SyntaxElementTypeSet): SyntaxElementTypeSet {
+    val newSet = tokens.toSet().intersect(other)
+    if (newSet.size == size) return this // no removed elements
+    return newSet.asSyntaxElementTypeSet()
+  }
 }
\ No newline at end of file