diff --git a/HACKING.rst b/HACKING.rst
index d66687e351..d763c75b8b 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -328,7 +328,7 @@ There are some broad criteria that will be followed when reviewing
 your change
 
 * **Is it passing tests** -- your change will not be reviewed
-  throughly unless the official CI has run successfully against it.
+  thoroughly unless the official CI has run successfully against it.
 
 * **Does this belong in DevStack** -- DevStack reviewers have a
   default position of "no" but are ready to be convinced by your
diff --git a/lib/dlm b/lib/dlm
index f68ee26b4b..95e9b0ac3d 100644
--- a/lib/dlm
+++ b/lib/dlm
@@ -46,7 +46,7 @@ ZOOKEEPER_CONF_DIR=/etc/zookeeper
 # - cleanup_dlm
 
 # This should be declared in the settings file of any plugin or
-# service that needs to have a dlm in their enviroment.
+# service that needs to have a dlm in their environment.
 function use_dlm {
     enable_service $(dlm_backend)
 }
diff --git a/lib/ironic b/lib/ironic
index 016e639d03..6a32983b24 100644
--- a/lib/ironic
+++ b/lib/ironic
@@ -92,7 +92,7 @@ IRONIC_VM_LOG_DIR=${IRONIC_VM_LOG_DIR:-$IRONIC_DATA_DIR/logs/}
 # Use DIB to create deploy ramdisk and kernel.
 IRONIC_BUILD_DEPLOY_RAMDISK=$(trueorfalse True IRONIC_BUILD_DEPLOY_RAMDISK)
 # If not use DIB, these files are used as deploy ramdisk/kernel.
-# (The value must be a absolute path)
+# (The value must be an absolute path)
 IRONIC_DEPLOY_RAMDISK=${IRONIC_DEPLOY_RAMDISK:-}
 IRONIC_DEPLOY_KERNEL=${IRONIC_DEPLOY_KERNEL:-}
 IRONIC_DEPLOY_ELEMENT=${IRONIC_DEPLOY_ELEMENT:-deploy-ironic}
@@ -672,7 +672,7 @@ function configure_iptables {
     # enable tftp natting for allowing connections to HOST_IP's tftp server
     sudo modprobe nf_conntrack_tftp
     sudo modprobe nf_nat_tftp
-    # explicitly allow DHCP - packets are occassionally being dropped here
+    # explicitly allow DHCP - packets are occasionally being dropped here
     sudo iptables -I INPUT -p udp --dport 67:68 --sport 67:68 -j ACCEPT || true
     # nodes boot from TFTP and callback to the API server listening on $HOST_IP
     sudo iptables -I INPUT -d $HOST_IP -p udp --dport 69 -j ACCEPT || true
diff --git a/tests/test_meta_config.sh b/tests/test_meta_config.sh
index f3e94af8f8..327fb56185 100755
--- a/tests/test_meta_config.sh
+++ b/tests/test_meta_config.sh
@@ -24,7 +24,7 @@ function check_result {
 }
 
 # mock function-common:die so that it does not
-# interupt our test script
+# interrupt our test script
 function die {
     exit -1
 }
diff --git a/tests/unittest.sh b/tests/unittest.sh
index 2570319fbf..26b5b8e592 100644
--- a/tests/unittest.sh
+++ b/tests/unittest.sh
@@ -46,7 +46,7 @@ function failed {
     ERROR=$((ERROR+1))
 }
 
-# assert string comparision of val1 equal val2, printing out msg
+# assert string comparison of val1 equal val2, printing out msg
 #  usage: assert_equal val1 val2 msg
 function assert_equal {
     local lineno