diff --git a/examples/dataengines/CMakeLists.txt b/examples/dataengines/CMakeLists.txt
index bbcf1510b..d5bfcb274 100644
--- a/examples/dataengines/CMakeLists.txt
+++ b/examples/dataengines/CMakeLists.txt
@@ -1,3 +1,3 @@
 add_subdirectory(simpleEngine)
 add_subdirectory(sourcesOnRequest)
-add_subdirectory(customDataContainers)
\ No newline at end of file
+add_subdirectory(customDataContainers)
diff --git a/examples/dataengines/customDataContainers/httpContainer.cpp b/examples/dataengines/customDataContainers/httpContainer.cpp
index 85553c28f..fd72d8840 100644
--- a/examples/dataengines/customDataContainers/httpContainer.cpp
+++ b/examples/dataengines/customDataContainers/httpContainer.cpp
@@ -91,7 +91,7 @@ void HttpContainer::fetchFinished(KJob *job)
         // data has been updated. This will cause visualizations to be updated.
         checkForUpdate();
 
-        // Clean up behind ourselves so there isn't unecessary memory usage
+        // Clean up behind ourselves so there isn't unnecessary memory usage
         m_data.clear();
     }
 }
diff --git a/src/declarativeimports/calendar/calendar.cpp b/src/declarativeimports/calendar/calendar.cpp
index 46b19baad..1638f23c7 100644
--- a/src/declarativeimports/calendar/calendar.cpp
+++ b/src/declarativeimports/calendar/calendar.cpp
@@ -149,7 +149,7 @@ void Calendar::setWeeks(int weeks)
 
 int Calendar::firstDayOfWeek() const
 {
-    // QML has Sunday as 0, so we need to accomodate here
+    // QML has Sunday as 0, so we need to accommodate here
     return m_firstDayOfWeek == 7 ? 0 : m_firstDayOfWeek;
 }
 
@@ -160,7 +160,7 @@ void Calendar::setFirstDayOfWeek(int day)
     }
 
     if (m_firstDayOfWeek != day) {
-        // QML has Sunday as 0, so we need to accomodate here
+        // QML has Sunday as 0, so we need to accommodate here
         // for QDate functions which have Sunday as 7
         if (day == 0) {
             m_firstDayOfWeek = 7;
diff --git a/src/declarativeimports/calendar/calendar.h b/src/declarativeimports/calendar/calendar.h
index 95755e6cd..57e0ea70d 100644
--- a/src/declarativeimports/calendar/calendar.h
+++ b/src/declarativeimports/calendar/calendar.h
@@ -103,7 +103,7 @@ class Calendar : public QObject
     Q_PROPERTY(int year READ year NOTIFY yearChanged)
 
     /**
-     * If an error occured, it will be set in this string as human readable text.
+     * If an error occurred, it will be set in this string as human readable text.
      */
     Q_PROPERTY(QString errorMessage READ errorMessage NOTIFY errorMessageChanged)
 
diff --git a/src/declarativeimports/calendar/qml/CalendarToolbar.qml b/src/declarativeimports/calendar/qml/CalendarToolbar.qml
index b9ae3f7a5..a5ca3662d 100644
--- a/src/declarativeimports/calendar/qml/CalendarToolbar.qml
+++ b/src/declarativeimports/calendar/qml/CalendarToolbar.qml
@@ -96,4 +96,4 @@ Row {
             calendarBackend.nextMonth()
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/declarativeimports/calendar/qml/DaysCalendar.qml b/src/declarativeimports/calendar/qml/DaysCalendar.qml
index 0ad5836f5..0cae8a845 100644
--- a/src/declarativeimports/calendar/qml/DaysCalendar.qml
+++ b/src/declarativeimports/calendar/qml/DaysCalendar.qml
@@ -35,7 +35,7 @@ Item {
     signal next
 
     signal activated(int index, var date, var item)
-    // so it forwards it to the delegate which then emits activated with all the neccessary data
+    // so it forwards it to the delegate which then emits activated with all the necessary data
     signal activateHighlightedItem
 
     readonly property int gridColumns: showWeekNumbers ? calendarGrid.columns + 1 : calendarGrid.columns
diff --git a/src/declarativeimports/core/svgitem.cpp b/src/declarativeimports/core/svgitem.cpp
index d1b37b9f4..919d6aeb3 100644
--- a/src/declarativeimports/core/svgitem.cpp
+++ b/src/declarativeimports/core/svgitem.cpp
@@ -137,7 +137,7 @@ QSGNode *SvgItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *updateP
         return nullptr;
     }
 
-    //this is more than just an optimisation, uploading a null image to QSGAtlasTexture causes a crash
+    //this is more than just an optimization, uploading a null image to QSGAtlasTexture causes a crash
     if (width() == 0.0 || height() == 0.0) {
         delete oldNode;
         return nullptr;
diff --git a/src/declarativeimports/plasmacomponents/qml/ModelContextMenu.qml b/src/declarativeimports/plasmacomponents/qml/ModelContextMenu.qml
index 2409ee088..0736ab1db 100644
--- a/src/declarativeimports/plasmacomponents/qml/ModelContextMenu.qml
+++ b/src/declarativeimports/plasmacomponents/qml/ModelContextMenu.qml
@@ -28,7 +28,7 @@ import QtQml 2.0
  * For standard item models, actions are created using the following model role names or properties
  *  display - a string contains the action name
  *  decoration - an icon to display
- *  separator - boolean that will add a seperator in the list
+ *  separator - boolean that will add a separator in the list
  *
  *
  *
diff --git a/src/declarativeimports/plasmaextracomponents/CMakeLists.txt b/src/declarativeimports/plasmaextracomponents/CMakeLists.txt
index bd53462c9..5b1400020 100644
--- a/src/declarativeimports/plasmaextracomponents/CMakeLists.txt
+++ b/src/declarativeimports/plasmaextracomponents/CMakeLists.txt
@@ -31,7 +31,7 @@ ecm_generate_qmltypes(org.kde.plasma.extras 2.0 DESTINATION ${KDE_INSTALL_QMLDIR
 # The platform specific stuff, overwrites a copy of the desktop one
 # it does install some files on top of the old ones, has to be done
 # file by file since if some component from the generic set is more
-# recent than the specifc ones, it wouldn't be overwritten
+# recent than the specific ones, it wouldn't be overwritten
 
 #install(TARGETS plasmaextracomponentsplugin DESTINATION ${KDE_INSTALL_PLUGINDIR}/platformimports/touch/org/kde/plasma/extras)
 #install(FILES qml/qmldir DESTINATION ${KDE_INSTALL_PLUGINDIR}/platformimports/touch/org/kde/plasma/extras)
diff --git a/src/declarativeimports/plasmaextracomponents/fallbackcomponent.h b/src/declarativeimports/plasmaextracomponents/fallbackcomponent.h
index c1c4297cd..022da488f 100644
--- a/src/declarativeimports/plasmaextracomponents/fallbackcomponent.h
+++ b/src/declarativeimports/plasmaextracomponents/fallbackcomponent.h
@@ -51,7 +51,7 @@ public:
     explicit FallbackComponent(QObject *parent = nullptr);
 
     /**
-    * This method must be called after the the basePath and the candidates property
+    * This method must be called after the basePath and the candidates property
     * This method resolves a file path based on the base path and the candidates.
     * it searches for a file named key under basepath/candidate/key, and returns
     * the path constructed with the first candidate that matches, if any.
diff --git a/src/plasma/plasma.h b/src/plasma/plasma.h
index 5f8936d1d..6c46fb8f8 100644
--- a/src/plasma/plasma.h
+++ b/src/plasma/plasma.h
@@ -113,7 +113,7 @@ public:
         ConfigureAction = 100,   /**< The Action will make some kind of configuration ui to appear */
         ControlAction = 200,  /**< Generic control, similar to ConfigureAction TODO: better doc */
         MiscAction = 300,  /**< A type of action that doesn't fit in the oher categories */
-        DestructiveAction = 400,  /**< A dangerous action, such as deletion of objects, plasmoids and files. They are intended to be shown separed from other actions */
+        DestructiveAction = 400,  /**< A dangerous action, such as deletion of objects, plasmoids and files. They are intended to be shown separated from other actions */
         UserAction = DestructiveAction + 1000 /**< If new types are needed in a C++ implementation, define them as ids more than  UserAction*/
     };
     Q_ENUM(ActionType)
diff --git a/src/plasma/svg.h b/src/plasma/svg.h
index d3ca3ea59..e960d79cb 100644
--- a/src/plasma/svg.h
+++ b/src/plasma/svg.h
@@ -402,7 +402,7 @@ public:
     bool fromCurrentTheme() const;
 
     /**
-     * Sets wether the Svg uses the global system theme for its colors or
+     * Sets whether the Svg uses the global system theme for its colors or
      * the Plasma theme. Default is False.
      *
      * @since 5.16
diff --git a/src/plasma/theme.h b/src/plasma/theme.h
index 705c7d84c..98bb095a7 100644
--- a/src/plasma/theme.h
+++ b/src/plasma/theme.h
@@ -314,7 +314,7 @@ public:
     void releaseRectsCache(const QString &image);
 
     /**
-     * @return plugin info for this theme, with informations such as
+     * @return plugin info for this theme, with information such as
      * name, description, author, website etc
      * @since 5.0
      */
diff --git a/src/plasmaquick/appletquickitem.cpp b/src/plasmaquick/appletquickitem.cpp
index 0b18ec140..98bbc5ed8 100644
--- a/src/plasmaquick/appletquickitem.cpp
+++ b/src/plasmaquick/appletquickitem.cpp
@@ -685,7 +685,7 @@ void AppletQuickItem::init()
                     const int preloadWeight = d->preloadWeight();
                     qCInfo(LOG_PLASMAQUICK) << "New Applet " << d->applet->title() << "with a weight of" << preloadWeight;
 
-                    //don't preload applets less then a certain weigth
+                    //don't preload applets less then a certain weight
                     if (d->s_preloadPolicy >= AppletQuickItemPrivate::Aggressive || preloadWeight >= AppletQuickItemPrivate::DelayedPreloadWeight) {
                         //spread the creation over a random delay to make it look
                         //plasma started already, and load the popup in the background
diff --git a/src/plasmaquick/dialog.cpp b/src/plasmaquick/dialog.cpp
index fe5d9b28a..b3fe857f4 100644
--- a/src/plasmaquick/dialog.cpp
+++ b/src/plasmaquick/dialog.cpp
@@ -947,7 +947,7 @@ QPoint Dialog::popupPosition(QQuickItem *item, const QSize &size)
     QRect avail = item->window()->screen()->availableGeometry();
 
     if (outsideParentWindow && d->frameSvgItem->enabledBorders() != Plasma::FrameSvg::AllBorders) {
-        //make the panel look it's inside the panel, in order to not make it look cutted
+        //make the panel look it's inside the panel, in order to not make it look cut
         switch (d->location) {
         case Plasma::Types::LeftEdge:
         case Plasma::Types::RightEdge:
diff --git a/src/plasmaquick/packageurlinterceptor.h b/src/plasmaquick/packageurlinterceptor.h
index b97ef038a..191eed49b 100644
--- a/src/plasmaquick/packageurlinterceptor.h
+++ b/src/plasmaquick/packageurlinterceptor.h
@@ -78,7 +78,7 @@ public:
                 extension == QStringLiteral("png") || extension == QStringLiteral("gif") ||
                 extension == QStringLiteral("jpg") || extension == QStringLiteral("jpeg")) {
             return QByteArray("images");
-            //FIXME: are those necessary? are they *always* catched by type?
+            //FIXME: are those necessary? are they *always* caught by type?
         } else if (extension == QStringLiteral("js")) {
             return QByteArray("code");
         } else if (extension == QStringLiteral("qml") || extension == QStringLiteral("qmldir")) {
diff --git a/src/scriptengines/qml/plasmoid/containmentinterface.cpp b/src/scriptengines/qml/plasmoid/containmentinterface.cpp
index 760ca5be2..7fa070c73 100644
--- a/src/scriptengines/qml/plasmoid/containmentinterface.cpp
+++ b/src/scriptengines/qml/plasmoid/containmentinterface.cpp
@@ -1032,7 +1032,7 @@ void ContainmentInterface::mousePressEvent(QMouseEvent *event)
         addContainmentActions(desktopMenu, event);
     }
 
-    //this is a workaround where Qt will fail to realise a mouse has been released
+    //this is a workaround where Qt will fail to realize a mouse has been released
 
     // this happens if a window which does not accept focus spawns a new window that takes focus and X grab
     // whilst the mouse is depressed