diff --git a/applets/appmenu/lib/appmenuapplet.cpp b/applets/appmenu/lib/appmenuapplet.cpp
index 8b25ebc2b..5d9afd9d1 100644
--- a/applets/appmenu/lib/appmenuapplet.cpp
+++ b/applets/appmenu/lib/appmenuapplet.cpp
@@ -42,7 +42,7 @@ AppMenuApplet::AppMenuApplet(QObject *parent, const QVariantList &data)
     : Plasma::Applet(parent, data)
 {
     ++s_refs;
-    //if we're the first, regster the service
+    //if we're the first, register the service
     if (s_refs == 1) {
         QDBusConnection::sessionBus().interface()->registerService(viewService(),
                 QDBusConnectionInterface::QueueService,
@@ -62,7 +62,7 @@ AppMenuApplet::AppMenuApplet(QObject *parent, const QVariantList &data)
                 QDBusConnection::sessionBus().interface()->unregisterService(viewService());
             }
         } else {
-            //if we're the first, regster the service
+            //if we're the first, register the service
             if (++s_refs == 1) {
                 QDBusConnection::sessionBus().interface()->registerService(viewService(),
                     QDBusConnectionInterface::QueueService,
diff --git a/dataengines/weather/ions/envcan/ion_envcan.cpp b/dataengines/weather/ions/envcan/ion_envcan.cpp
index 0b1a141ab..ba66d2c82 100644
--- a/dataengines/weather/ions/envcan/ion_envcan.cpp
+++ b/dataengines/weather/ions/envcan/ion_envcan.cpp
@@ -709,7 +709,7 @@ void EnvCanadaIon::parseWeatherSite(WeatherData& data, QXmlStreamReader& xml)
     }
 }
 
-// Parse Weather data main loop, from here we have to decend into each tag pair
+// Parse Weather data main loop, from here we have to descend into each tag pair
 bool EnvCanadaIon::readXMLData(const QString& source, QXmlStreamReader& xml)
 {
     WeatherData data;
diff --git a/dataengines/weather/ions/noaa/ion_noaa.cpp b/dataengines/weather/ions/noaa/ion_noaa.cpp
index 718639c4e..b778fe26f 100644
--- a/dataengines/weather/ions/noaa/ion_noaa.cpp
+++ b/dataengines/weather/ions/noaa/ion_noaa.cpp
@@ -462,7 +462,7 @@ void NOAAIon::parseWeatherSite(WeatherData& data, QXmlStreamReader& xml)
     }
 }
 
-// Parse Weather data main loop, from here we have to decend into each tag pair
+// Parse Weather data main loop, from here we have to descend into each tag pair
 bool NOAAIon::readXMLData(const QString& source, QXmlStreamReader& xml)
 {
     WeatherData data;
diff --git a/klipper/historyimageitem.cpp b/klipper/historyimageitem.cpp
index 3ebf1b56f..596f8b7e1 100644
--- a/klipper/historyimageitem.cpp
+++ b/klipper/historyimageitem.cpp
@@ -47,10 +47,10 @@ QString HistoryImageItem::text() const {
     if (m_text.isNull()) {
         m_text =
             QStringLiteral("▨ ") +
-            i18n("%1x%2 %3bpp")
-                 .arg(m_data.width())
-                 .arg(m_data.height())
-                 .arg(m_data.depth());
+            i18n("%1x%2 %3bpp",
+                 m_data.width(),
+                 m_data.height(),
+                 m_data.depth());
     }
     return m_text;
 }
diff --git a/klipper/klipperpopup.h b/klipper/klipperpopup.h
index cf70ab977..faf699f53 100644
--- a/klipper/klipperpopup.h
+++ b/klipper/klipperpopup.h
@@ -1,6 +1,6 @@
 /* This file is part of the KDE project
    Copyright (C) 2004  Esben Mose Hansen <kde@mosehansen.dk>
-   Copytight (C) by Andrew Stanley-Jones
+   Copyright (C) by Andrew Stanley-Jones
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public
    License as published by the Free Software Foundation; either
diff --git a/libnotificationmanager/jobsmodel.h b/libnotificationmanager/jobsmodel.h
index a57a29bc5..45de9be57 100644
--- a/libnotificationmanager/jobsmodel.h
+++ b/libnotificationmanager/jobsmodel.h
@@ -50,7 +50,7 @@ public:
     bool init();
 
     /**
-     * Whether the notification service could be reigstered
+     * Whether the notification service could be registered
      */
     bool isValid() const;
 
diff --git a/libnotificationmanager/notification.cpp b/libnotificationmanager/notification.cpp
index 1dd437f00..06ce55986 100644
--- a/libnotificationmanager/notification.cpp
+++ b/libnotificationmanager/notification.cpp
@@ -59,7 +59,7 @@ QString Notification::Private::sanitize(const QString &text)
     t = t.simplified();
     // Finally, check if we don't have multiple <br/>s following,
     // can happen for example when "\n       \n" is sent, this replaces
-    // all <br/>s in succsession with just one
+    // all <br/>s in succession with just one
     t.replace(QRegularExpression(QStringLiteral("<br/>\\s*<br/>(\\s|<br/>)*")), QLatin1String("<br/>"));
     // This fancy RegExp escapes every occurrence of & since QtQuick Text will blatantly cut off
     // text where it finds a stray ampersand.
diff --git a/libnotificationmanager/notificationsmodel.cpp b/libnotificationmanager/notificationsmodel.cpp
index fa46e2774..2a475641e 100644
--- a/libnotificationmanager/notificationsmodel.cpp
+++ b/libnotificationmanager/notificationsmodel.cpp
@@ -390,7 +390,7 @@ void NotificationsModel::configure(const QString &desktopEntry, const QString &n
 {
     // TODO would be nice to just have a signal but since NotificationsModel is shared,
     // if we connect to this from Notifications you would get a signal in every instance
-    // and potentialy open the config dialog multiple times.
+    // and potentially open the config dialog multiple times.
 
     QStringList args;
     if (!desktopEntry.isEmpty()) {
diff --git a/libnotificationmanager/server.h b/libnotificationmanager/server.h
index 039fb310b..c5ebc8af6 100644
--- a/libnotificationmanager/server.h
+++ b/libnotificationmanager/server.h
@@ -62,7 +62,7 @@ class NOTIFICATIONMANAGER_EXPORT Server : public QObject
     /**
      * Whether notifications are currently inhibited.
      *
-     * This is what is announced to other applicatons on the bus.
+     * This is what is announced to other applications on the bus.
      *
      * @note This does not keep track of inhibitions on its own,
      * you need to calculate this yourself and update the property accordingly.
@@ -171,7 +171,7 @@ public:
 Q_SIGNALS:
     /**
      * Emitted when the notification service validity changes,
-     * because it sucessfully registered the service or lost
+     * because it successfully registered the service or lost
      * ownership of it.
      * @since 5.18
      */
diff --git a/plasma-windowed/plasmawindowedcorona.cpp b/plasma-windowed/plasmawindowedcorona.cpp
index a589dd03f..4ac91d85a 100644
--- a/plasma-windowed/plasmawindowedcorona.cpp
+++ b/plasma-windowed/plasmawindowedcorona.cpp
@@ -50,7 +50,7 @@ void PlasmaWindowedCorona::loadApplet(const QString &applet, const QVariantList
 
     Plasma::Containment *cont = containments().first();
 
-    //forbid more instances per applet (todo: activate the correpsponding already loaded applet)
+    //forbid more instances per applet (todo: activate the corresponding already loaded applet)
     for (Plasma::Applet *a : cont->applets()) {
         if (a->pluginMetaData().pluginId() == applet) {
             return;
diff --git a/runners/calculator/calculatorrunner.cpp b/runners/calculator/calculatorrunner.cpp
index bb93fa1b1..98686f260 100644
--- a/runners/calculator/calculatorrunner.cpp
+++ b/runners/calculator/calculatorrunner.cpp
@@ -261,7 +261,7 @@ void CalculatorRunner::match(Plasma::RunnerContext &context)
 
     userFriendlySubstitutions(cmd);
     #ifndef ENABLE_QALCULATE
-    cmd.replace(QRegExp(QStringLiteral("([a-zA-Z]+)")), QStringLiteral("Math.\\1")); //needed for accessing math funktions like sin(),....
+    cmd.replace(QRegExp(QStringLiteral("([a-zA-Z]+)")), QStringLiteral("Math.\\1")); //needed for accessing math functions like sin(),....
     #endif
 
     bool isApproximate = false;
diff --git a/runners/services/servicerunner.h b/runners/services/servicerunner.h
index 8d9ad1a75..395db3ffb 100644
--- a/runners/services/servicerunner.h
+++ b/runners/services/servicerunner.h
@@ -28,7 +28,7 @@
 /**
  * This class looks for matches in the set of .desktop files installed by
  * applications. This way the user can type exactly what they see in the
- * appications menu and have it start the appropriate app. Essentially anything
+ * applications menu and have it start the appropriate app. Essentially anything
  * that KService knows about, this runner can launch
  */
 
diff --git a/runners/windowedwidgets/windowedwidgetsrunner.h b/runners/windowedwidgets/windowedwidgetsrunner.h
index fbc8006ea..782c86a9d 100644
--- a/runners/windowedwidgets/windowedwidgetsrunner.h
+++ b/runners/windowedwidgets/windowedwidgetsrunner.h
@@ -28,7 +28,7 @@
 /**
  * This class looks for matches in the set of .desktop files installed by
  * applications. This way the user can type exactly what they see in the
- * appications menu and have it start the appropriate app. Essentially anything
+ * applications menu and have it start the appropriate app. Essentially anything
  * that KService knows about, this runner can launch
  */
 
diff --git a/xembed-sni-proxy/sniproxy.cpp b/xembed-sni-proxy/sniproxy.cpp
index 09f00464d..c72a88a46 100644
--- a/xembed-sni-proxy/sniproxy.cpp
+++ b/xembed-sni-proxy/sniproxy.cpp
@@ -258,7 +258,7 @@ QSize SNIProxy::calculateClientWindowSize() const
     //if the window is a clearly stupid size resize to be something sensible
     //this is needed as chromium and such when resized just fill the icon with transparent space and only draw in the middle
     //however KeePass2 does need this as by default the window size is 273px wide and is not transparent
-    //use an artbitrary heuristic to make sure icons are always sensible
+    //use an arbitrary heuristic to make sure icons are always sensible
     if (clientWindowSize.isEmpty() || clientWindowSize.width() > s_embedSize || clientWindowSize.height() > s_embedSize) {
         qCDebug(SNIPROXY) << "Resizing window" << m_windowId << Title() << "from w*h" << clientWindowSize;