diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.cc b/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
index 900cd3cc053..e45a3cbaa15 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
@@ -2097,7 +2097,7 @@ static void add_error(grpc_error* error, grpc_error** refs, size_t* nrefs) {
 }
 
 static grpc_error* removal_error(grpc_error* extra_error, grpc_chttp2_stream* s,
-                                 const char* master_error_msg) {
+                                 const char* main_error_msg) {
   grpc_error* refs[3];
   size_t nrefs = 0;
   add_error(s->read_closed_error, refs, &nrefs);
@@ -2105,7 +2105,7 @@ static grpc_error* removal_error(grpc_error* extra_error, grpc_chttp2_stream* s,
   add_error(extra_error, refs, &nrefs);
   grpc_error* error = GRPC_ERROR_NONE;
   if (nrefs > 0) {
-    error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(master_error_msg,
+    error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(main_error_msg,
                                                              refs, nrefs);
   }
   GRPC_ERROR_UNREF(extra_error);
diff --git a/src/core/lib/iomgr/resource_quota.cc b/src/core/lib/iomgr/resource_quota.cc
index 464cccdc861..dcbd5089bac 100644
--- a/src/core/lib/iomgr/resource_quota.cc
+++ b/src/core/lib/iomgr/resource_quota.cc
@@ -132,7 +132,7 @@ struct grpc_resource_quota {
      scaled to the range [0..RESOURCE_USAGE_ESTIMATION_MAX] */
   gpr_atm memory_usage_estimation;
 
-  /* Master combiner lock: all activity on a quota executes under this combiner
+  /* Main combiner lock: all activity on a quota executes under this combiner
    * (so no mutex is needed for this data structure) */
   grpc_core::Combiner* combiner;
   /* Size of the resource quota */
diff --git a/tools/run_tests/sanity/check_illegal_terms.sh b/tools/run_tests/sanity/check_illegal_terms.sh
new file mode 100755
index 00000000000..f0d06a9c3d5
--- /dev/null
+++ b/tools/run_tests/sanity/check_illegal_terms.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+# Copyright 2021 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -e
+
+cd "$(dirname "$0")/../../.."
+
+#
+# Disallow the usage of certain terms.
+#
+
+grep -PIirn \
+    '((\b|_)(black[\ -]?hat|black[\ -]?list|black[\ -]?listed|black[\ -]?listing|dummy|grand[\ -]?father\ clause|grand[\ -]?fathered|hang|hung|man[\ -]?power|man[\ -]?hours|master(?!/)|slave|white[\ -]?hat|white[\ -]?list|white[\ -]?listed|white[\ -]?listing)(\b|_))' \
+    examples \
+    include \
+    src/abseil-cpp \
+    src/compiler \
+    src/core \
+    src/cpp \
+    test | \
+    diff - /dev/null
diff --git a/tools/run_tests/sanity/sanity_tests.yaml b/tools/run_tests/sanity/sanity_tests.yaml
index 9b6d3008233..f6954c425a6 100644
--- a/tools/run_tests/sanity/sanity_tests.yaml
+++ b/tools/run_tests/sanity/sanity_tests.yaml
@@ -4,6 +4,7 @@
 - script: tools/run_tests/sanity/check_buildifier.sh
 - script: tools/run_tests/sanity/check_cache_mk.sh
 - script: tools/run_tests/sanity/check_deprecated_grpc++.py
+- script: tools/run_tests/sanity/check_illegal_terms.sh
 - script: tools/run_tests/sanity/check_owners.sh
 - script: tools/run_tests/sanity/check_port_platform.py
 - script: tools/run_tests/sanity/check_qps_scenario_changes.py