diff --git a/libs/ui/widgets/kis_advanced_color_space_selector.cc b/libs/ui/widgets/kis_advanced_color_space_selector.cc
--- a/libs/ui/widgets/kis_advanced_color_space_selector.cc
+++ b/libs/ui/widgets/kis_advanced_color_space_selector.cc
@@ -392,7 +392,7 @@
                                                                     "<b><a href=\"https://en.wikipedia.org/wiki/Grayscale\">Grayscale</a></b> only allows for "
                                                                     "gray values and transparent values. Grayscale images use half "
                                                                     "the memory and disk space compared to an RGB image of the same bit-depth.<br/>"
-                                                                    "Grayscale is useful for inking and greyscale images. In "
+                                                                    "Grayscale is useful for inking and grayscale images. In "
                                                                     "Krita, you can mix Grayscale and RGB layers in the same image.")+"</p>");
     } else if (currentModelStr == "LABA") {
         d->colorSpaceSelector->textProfileDescription->append("<p>"+i18nc("If the selected model is LAB",
diff --git a/plugins/dockers/advancedcolorselector/kis_color_selector_base.h b/plugins/dockers/advancedcolorselector/kis_color_selector_base.h
--- a/plugins/dockers/advancedcolorselector/kis_color_selector_base.h
+++ b/plugins/dockers/advancedcolorselector/kis_color_selector_base.h
@@ -96,7 +96,7 @@
 protected Q_SLOTS:
     void hidePopup();
 
-    /// if you overwrite this, keep in mind, that you should set the colour only, if m_colorUpdateAllowed is true
+    /// if you overwrite this, keep in mind, that you should set the color only, if m_colorUpdateAllowed is true
     virtual void canvasResourceChanged(int key, const QVariant& v);
 
     void updateLastUsedColorPreview(const KoColor &color);
diff --git a/plugins/dockers/advancedcolorselector/kis_color_selector_base.cpp b/plugins/dockers/advancedcolorselector/kis_color_selector_base.cpp
--- a/plugins/dockers/advancedcolorselector/kis_color_selector_base.cpp
+++ b/plugins/dockers/advancedcolorselector/kis_color_selector_base.cpp
@@ -219,7 +219,7 @@
     event->accept();
 
 
-//this boolean here is to check if the colour selector is updating the resource, so it won't update itself when the resource is updated//
+//this boolean here is to check if the color selector is updating the resource, so it won't update itself when the resource is updated//
    if (m_colorUpdateSelf==false)
    {m_colorUpdateSelf=true;}
 
@@ -540,7 +540,7 @@
 void KisColorSelectorBase::tryHideAllPopups()
 {
     if (m_colorPreviewPopup->isVisible()) {
-        m_colorUpdateSelf=false; //this is for allowing advanced selector to listen to outside colour-change events.
+        m_colorUpdateSelf=false; //this is for allowing advanced selector to listen to outside color-change events.
         m_colorPreviewPopup->hide();
     }
 
diff --git a/plugins/dockers/advancedcolorselector/kis_color_selector_component.h b/plugins/dockers/advancedcolorselector/kis_color_selector_component.h
--- a/plugins/dockers/advancedcolorselector/kis_color_selector_component.h
+++ b/plugins/dockers/advancedcolorselector/kis_color_selector_component.h
@@ -78,10 +78,10 @@
     void paramChanged(qreal hue, qreal hsvSaturation, qreal value, qreal hslSaturation, qreal lightness, qreal hsiSaturation, qreal intensity, qreal hsySaturation, qreal luma);
 protected:
     const KoColorSpace* colorSpace() const;
-    /// returns true, if ether the colour space, the size or the parameters have changed since the last paint event
+    /// returns true, if ether the color space, the size or the parameters have changed since the last paint event
     bool isDirty() const;
 
-    /// this method must be overloaded to return the colour at position x/y and draw a marker on that position
+    /// this method must be overloaded to return the color at position x/y and draw a marker on that position
     virtual KoColor selectColor(int x, int y) = 0;
 
     /// paint component using given painter
diff --git a/plugins/dockers/advancedcolorselector/kis_color_selector_settings.cpp b/plugins/dockers/advancedcolorselector/kis_color_selector_settings.cpp
--- a/plugins/dockers/advancedcolorselector/kis_color_selector_settings.cpp
+++ b/plugins/dockers/advancedcolorselector/kis_color_selector_settings.cpp
@@ -316,10 +316,10 @@
     ui->lumaCoefficientGroupbox->setVisible(false);
 
     if (index == 0)     {  // HSV
-        ui->ACSTypeDescriptionLabel->setText(i18n("Values goes from black to white, or black to the most saturated colour. Saturation, in turn, goes from the most saturated colour to white, grey or black."));
+        ui->ACSTypeDescriptionLabel->setText(i18n("Values goes from black to white, or black to the most saturated color. Saturation, in turn, goes from the most saturated color to white, gray or black."));
     }
     else if (index == 1)     {  // HSL
-        ui->ACSTypeDescriptionLabel->setText(i18n("Lightness goes from black to white, with middle grey being equal to the most saturated colour."));
+        ui->ACSTypeDescriptionLabel->setText(i18n("Lightness goes from black to white, with middle gray being equal to the most saturated color."));
     }
     else if (index == 2)     {  // HSI
         ui->ACSTypeDescriptionLabel->setText(i18n("Intensity maps to the sum of rgb components"));
diff --git a/plugins/extensions/colorspaceconversion/wdgconvertcolorspace.ui b/plugins/extensions/colorspaceconversion/wdgconvertcolorspace.ui
--- a/plugins/extensions/colorspaceconversion/wdgconvertcolorspace.ui
+++ b/plugins/extensions/colorspaceconversion/wdgconvertcolorspace.ui
@@ -94,7 +94,7 @@
       <item row="3" column="0">
        <widget class="QRadioButton" name="radioAbsoluteColorimetric">
         <property name="toolTip">
-         <string>Best for spot colours</string>
+         <string>Best for spot colors</string>
         </property>
         <property name="whatsThis">
          <string>Within the destination device gamut; hue,