diff --git a/intern/utfconv/utfconv.h b/intern/utfconv/utfconv.h
index 36dff288966..b4addd72c75 100644
--- a/intern/utfconv/utfconv.h
+++ b/intern/utfconv/utfconv.h
@@ -32,32 +32,36 @@ extern "C" {
 /**
  * Counts how many bytes is required for future utf-8 string using utf-16
  * \param string16: pointer to working utf-16 string
- * \return How many bytes must be allocated includeng NULL.
+ * \return How many bytes must be allocated including NULL.
  */
 size_t count_utf_8_from_16(const wchar_t *string16);
 
 /**
  * Counts how many wchar_t (two byte) is required for future utf-16 string using utf-8
  * \param string8: pointer to working utf-8 string
- * \return How many bytes must be allocated includeng NULL.
+ * \return How many bytes must be allocated including NULL.
  */
 size_t count_utf_16_from_8(const char *string8);
 
-/**
+/*
  * conv_utf_*** errors
  */
-#define UTF_ERROR_NULL_IN (1 << 0) /* Error occures when requered parameter is missing*/
-#define UTF_ERROR_ILLCHAR (1 << 1) /* Error if character is in illigal UTF rage*/
-#define UTF_ERROR_SMALL \
-  (1 << 2) /* Passed size is to small. It gives legal string with character missing at the end */
-#define UTF_ERROR_ILLSEQ (1 << 3) /* Error if sequence is broken and doesn't finish*/
+
+/** Error occurs when required parameter is missing. */
+#define UTF_ERROR_NULL_IN (1 << 0)
+/** Error if character is in illegal UTF range. */
+#define UTF_ERROR_ILLCHAR (1 << 1)
+/** Passed size is to small. It gives legal string with character missing at the end. */
+#define UTF_ERROR_SMALL (1 << 2)
+/** Error if sequence is broken and doesn't finish. */
+#define UTF_ERROR_ILLSEQ (1 << 3)
 
 /**
  * Converts utf-16 string to allocated utf-8 string
  * \param in16: utf-16 string to convert
  * \param out8: utf-8 string to string the conversion
  * \param size8: the allocated size in bytes of out8
- * \return Returns any errors occured during conversion. See the block above,
+ * \return Returns any errors occurred during conversion. See the block above,
  */
 int conv_utf_16_to_8(const wchar_t *in16, char *out8, size_t size8);
 
@@ -66,7 +70,7 @@ int conv_utf_16_to_8(const wchar_t *in16, char *out8, size_t size8);
  * \param in8: utf-8 string to convert
  * \param out16: utf-16 string to string the conversion
  * \param size16: the allocated size in wchar_t (two byte) of out16
- * \return Returns any errors occured during conversion. See the block above,
+ * \return Returns any errors occurred during conversion. See the block above,
  */
 int conv_utf_8_to_16(const char *in8, wchar_t *out16, size_t size16);
 
diff --git a/source/blender/draw/engines/eevee/eevee_screen_raytrace.c b/source/blender/draw/engines/eevee/eevee_screen_raytrace.c
index 94b0161faf8..f5b4e4d43a5 100644
--- a/source/blender/draw/engines/eevee/eevee_screen_raytrace.c
+++ b/source/blender/draw/engines/eevee/eevee_screen_raytrace.c
@@ -139,13 +139,13 @@ void EEVEE_screen_raytrace_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *v
      *
      * Following Frostbite stochastic SSR.
      *
-     * - First pass Trace rays across the depth buffer. The hit position and pdf are
+     * - First pass Trace rays across the depth buffer. The hit position and PDF are
      *   recorded in a RGBA16F render target for each ray (sample).
      *
      * - We down-sample the previous frame color buffer.
      *
      * - For each final pixel, we gather neighbors rays and choose a color buffer
-     *   mipmap for each ray using its pdf. (filtered importance sampling)
+     *   mipmap for each ray using its PDF. (filtered importance sampling)
      *   We then evaluate the lighting from the probes and mix the results together.
      */
     DRW_PASS_CREATE(psl->ssr_raytrace, DRW_STATE_WRITE_COLOR);
diff --git a/source/blender/editors/interface/interface_widgets.c b/source/blender/editors/interface/interface_widgets.c
index 26b2c7a9091..0c6be7b1196 100644
--- a/source/blender/editors/interface/interface_widgets.c
+++ b/source/blender/editors/interface/interface_widgets.c
@@ -1819,7 +1819,7 @@ static void ui_text_clip_right_label(const uiFontStyle *fstyle, uiBut *but, cons
   but->strwidth = BLF_width(fstyle->uifont_id, but->drawstr, sizeof(but->drawstr));
   but->ofs = 0;
 
-  /* First shorten num-buttons eg,
+  /* First shorten number-buttons eg,
    *   Translucency: 0.000
    * becomes
    *   Trans: 0.000
@@ -3801,7 +3801,7 @@ static void widget_numslider(
   wtb.draw_inner = false;
   widgetbase_draw(&wtb, wcol);
 
-  /* Add space at either side of the button so text aligns with numbuttons
+  /* Add space at either side of the button so text aligns with number-buttons
    * (which have arrow icons). */
   if (!(state & UI_STATE_TEXT_INPUT)) {
     rect->xmax -= toffs;
diff --git a/source/blender/editors/space_outliner/tree/tree_element.cc b/source/blender/editors/space_outliner/tree/tree_element.cc
index 6fe3f341fd3..b0508e10671 100644
--- a/source/blender/editors/space_outliner/tree/tree_element.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element.cc
@@ -45,7 +45,7 @@ static AbstractTreeElement *tree_element_create(int type, TreeElement &legacy_te
    * it as much as possible for now. Would be nice to entirely get rid of that, no more `void *`.
    *
    * Once #outliner_add_element() is sufficiently simplified, it should be replaced by a C++ call.
-   * It could take the derived type as template paramenter (e.g. #TreeElementAnimData) and use C++
+   * It could take the derived type as template parameter (e.g. #TreeElementAnimData) and use C++
    * perfect forwarding to pass any data to the type's constructor.
    * If general Outliner code wants to access the data, they can query that through the derived
    * element type then. There's no need for `void *` anymore then.
diff --git a/source/blender/modifiers/intern/MOD_nodes.cc b/source/blender/modifiers/intern/MOD_nodes.cc
index 877b15f5010..f8242c87bd3 100644
--- a/source/blender/modifiers/intern/MOD_nodes.cc
+++ b/source/blender/modifiers/intern/MOD_nodes.cc
@@ -331,7 +331,7 @@ class GeometryNodesEvaluator {
         values.append(this->get_input_from_incoming_link(socket_to_compute, from_socket));
       }
       else {
-        /* If the same from-socket occures more than once, we make a copy of the first value. This
+        /* If the same from-socket occurs more than once, we make a copy of the first value. This
          * can happen when a node linked to a multi-input-socket is muted. */
         GMutablePointer value = values[first_occurence];
         const CPPType *type = value.type();
@@ -647,7 +647,7 @@ static IDProperty *socket_add_property(IDProperty *settings_prop_group,
 
   prop->flag |= IDP_FLAG_OVERRIDABLE_LIBRARY;
 
-  /* Make the group in the ui container group to hold the property's UI settings. */
+  /* Make the group in the UI container group to hold the property's UI settings. */
   IDProperty *prop_ui_group;
   {
     IDPropertyTemplate idprop = {0};
diff --git a/source/blender/windowmanager/intern/wm.c b/source/blender/windowmanager/intern/wm.c
index 836bca98f65..b66544831f1 100644
--- a/source/blender/windowmanager/intern/wm.c
+++ b/source/blender/windowmanager/intern/wm.c
@@ -20,7 +20,7 @@
 /** \file
  * \ingroup wm
  *
- * Internal functions for managing UI registrable types (operator, UI and menu types).
+ * Internal functions for managing UI registerable types (operator, UI and menu types).
  *
  * Also Blender's main event loop (WM_main).
  */