diff --git a/app/assets/javascripts/releases/store/actions.js b/app/assets/javascripts/releases/store/actions.js
index baa2251403e..b5c4d54ac33 100644
--- a/app/assets/javascripts/releases/store/actions.js
+++ b/app/assets/javascripts/releases/store/actions.js
@@ -11,7 +11,7 @@ export const requestReleases = ({ commit }) => commit(types.REQUEST_RELEASES);
 /**
  * Fetches the main endpoint.
  * Will dispatch requestNamespace action before starting the request.
- * Will dispatch receiveNamespaceSuccess if the request is successfull
+ * Will dispatch receiveNamespaceSuccess if the request is successful
  * Will dispatch receiveNamesapceError if the request returns an error
  *
  * @param {String} projectId
diff --git a/app/controllers/clusters/clusters_controller.rb b/app/controllers/clusters/clusters_controller.rb
index 3bd91b71d92..68a2a83f0de 100644
--- a/app/controllers/clusters/clusters_controller.rb
+++ b/app/controllers/clusters/clusters_controller.rb
@@ -24,7 +24,7 @@ class Clusters::ClustersController < Clusters::BaseController
     # Note: We are paginating through an array here but this should OK as:
     #
     # In CE, we can have a maximum group nesting depth of 21, so including
-    # project cluster, we can have max 22 clusters for a group hierachy.
+    # project cluster, we can have max 22 clusters for a group hierarchy.
     # In EE (Premium) we can have any number, as multiple clusters are
     # supported, but the number of clusters are fairly low currently.
     #
diff --git a/app/controllers/concerns/lfs_request.rb b/app/controllers/concerns/lfs_request.rb
index 5572c3cee2d..57e444319e0 100644
--- a/app/controllers/concerns/lfs_request.rb
+++ b/app/controllers/concerns/lfs_request.rb
@@ -123,7 +123,7 @@ module LfsRequest
     (authentication_abilities || []).include?(capability)
   end
 
-  # Overriden in EE
+  # Overridden in EE
   def limit_exceeded?
     false
   end
diff --git a/app/finders/group_descendants_finder.rb b/app/finders/group_descendants_finder.rb
index 96a36db7ec8..ec340f38450 100644
--- a/app/finders/group_descendants_finder.rb
+++ b/app/finders/group_descendants_finder.rb
@@ -134,7 +134,7 @@ class GroupDescendantsFinder
   def subgroups
     return Group.none unless Group.supports_nested_objects?
 
-    # When filtering subgroups, we want to find all matches withing the tree of
+    # When filtering subgroups, we want to find all matches within the tree of
     # descendants to show to the user
     groups = if params[:filter]
                subgroups_matching_filter
diff --git a/app/helpers/count_helper.rb b/app/helpers/count_helper.rb
index 13839474e1f..62bb2e4da23 100644
--- a/app/helpers/count_helper.rb
+++ b/app/helpers/count_helper.rb
@@ -13,7 +13,7 @@ module CountHelper
   # memberships, and deducting 1 for each root of the fork network.
   # This might be inacurate as the root of the fork network might have been deleted.
   #
-  # This makes querying this information a lot more effecient and it should be
+  # This makes querying this information a lot more efficient and it should be
   # accurate enough for the instance wide statistics
   def approximate_fork_count_with_delimiters(count_data)
     fork_network_count = count_data[ForkNetwork]
diff --git a/app/models/ci/build_trace_chunk.rb b/app/models/ci/build_trace_chunk.rb
index da08214963f..33e61cd2111 100644
--- a/app/models/ci/build_trace_chunk.rb
+++ b/app/models/ci/build_trace_chunk.rb
@@ -18,7 +18,7 @@ module Ci
     FailedToPersistDataError = Class.new(StandardError)
 
     # Note: The ordering of this enum is related to the precedence of persist store.
-    # The bottom item takes the higest precedence, and the top item takes the lowest precedence.
+    # The bottom item takes the highest precedence, and the top item takes the lowest precedence.
     enum data_store: {
       redis: 1,
       database: 2,
diff --git a/app/models/concerns/fast_destroy_all.rb b/app/models/concerns/fast_destroy_all.rb
index 1e3afd641ed..f862031bce0 100644
--- a/app/models/concerns/fast_destroy_all.rb
+++ b/app/models/concerns/fast_destroy_all.rb
@@ -11,7 +11,7 @@
 # it is difficult to accomplish it.
 #
 # This module defines a format to use `delete_all` and delete associated external data.
-# Here is an exmaple
+# Here is an example
 #
 # Situation
 # - `Project` has many `Ci::BuildTraceChunk` through `Ci::Build`
diff --git a/app/models/concerns/iid_routes.rb b/app/models/concerns/iid_routes.rb
index b7f99e845ca..3eeb29b6595 100644
--- a/app/models/concerns/iid_routes.rb
+++ b/app/models/concerns/iid_routes.rb
@@ -4,7 +4,7 @@ module IidRoutes
   ##
   # This automagically enforces all related routes to use `iid` instead of `id`
   # If you want to use `iid` for some routes and `id` for other routes, this module should not to be included,
-  # instead you should define `iid` or `id` explictly at each route generators. e.g. pipeline_path(project.id, pipeline.iid)
+  # instead you should define `iid` or `id` explicitly at each route generators. e.g. pipeline_path(project.id, pipeline.iid)
   def to_param
     iid.to_s
   end
diff --git a/app/models/notification_recipient.rb b/app/models/notification_recipient.rb
index 9f16eefe074..481c1d963c6 100644
--- a/app/models/notification_recipient.rb
+++ b/app/models/notification_recipient.rb
@@ -153,7 +153,7 @@ class NotificationRecipient
     user.global_notification_setting
   end
 
-  # Returns the notificaton_setting of the lowest group in hierarchy with non global level
+  # Returns the notification_setting of the lowest group in hierarchy with non global level
   def closest_non_global_group_notification_settting
     return unless @group
     return if indexed_group_notification_settings.empty?
diff --git a/app/models/project.rb b/app/models/project.rb
index c72d3a3b725..62e73e2ef9f 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -248,10 +248,10 @@ class Project < ActiveRecord::Base
   has_many :container_repositories, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
   has_many :commit_statuses
-  # The relation :all_pipelines is intented to be used when we want to get the
+  # The relation :all_pipelines is intended to be used when we want to get the
   # whole list of pipelines associated to the project
   has_many :all_pipelines, class_name: 'Ci::Pipeline', inverse_of: :project
-  # The relation :ci_pipelines is intented to be used when we want to get only
+  # The relation :ci_pipelines is intended to be used when we want to get only
   # those pipeline which are directly related to CI. There are
   # other pipelines, like webide ones, that we won't retrieve
   # if we use this relation.
@@ -1206,7 +1206,7 @@ class Project < ActiveRecord::Base
     "#{web_url}.git"
   end
 
-  # Is overriden in EE
+  # Is overridden in EE
   def lfs_http_url_to_repo(_)
     http_url_to_repo
   end
diff --git a/app/services/ci/create_pipeline_service.rb b/app/services/ci/create_pipeline_service.rb
index c4f69175de3..35a0efcd0a1 100644
--- a/app/services/ci/create_pipeline_service.rb
+++ b/app/services/ci/create_pipeline_service.rb
@@ -112,10 +112,10 @@ module Ci
     def extra_options(options = {})
       # In Ruby 2.4, even when options is empty, f(**options) doesn't work when f
       # doesn't have any parameters. We reproduce the Ruby 2.5 behavior by
-      # checking explicitely that no arguments are given.
+      # checking explicitly that no arguments are given.
       raise ArgumentError if options.any?
 
-      {} # overriden in EE
+      {} # overridden in EE
     end
   end
 end
diff --git a/app/services/ci/pipeline_trigger_service.rb b/app/services/ci/pipeline_trigger_service.rb
index 4ba3f5fb8ba..2dbb7c3917d 100644
--- a/app/services/ci/pipeline_trigger_service.rb
+++ b/app/services/ci/pipeline_trigger_service.rb
@@ -38,11 +38,11 @@ module Ci
     end
 
     def create_pipeline_from_job(job)
-      # overriden in EE
+      # overridden in EE
     end
 
     def job_from_token
-      # overriden in EE
+      # overridden in EE
     end
 
     def variables
diff --git a/app/services/git_push_service.rb b/app/services/git_push_service.rb
index 092fd64574d..f387c749a21 100644
--- a/app/services/git_push_service.rb
+++ b/app/services/git_push_service.rb
@@ -235,6 +235,6 @@ class GitPushService < BaseService
   private
 
   def pipeline_options
-    {} # to be overriden in EE
+    {} # to be overridden in EE
   end
 end
diff --git a/app/services/git_tag_push_service.rb b/app/services/git_tag_push_service.rb
index 6fef5b3ed1d..e39b3603c6c 100644
--- a/app/services/git_tag_push_service.rb
+++ b/app/services/git_tag_push_service.rb
@@ -61,6 +61,6 @@ class GitTagPushService < BaseService
   end
 
   def pipeline_options
-    {} # to be overriden in EE
+    {} # to be overridden in EE
   end
 end
diff --git a/app/services/groups/create_service.rb b/app/services/groups/create_service.rb
index 55a3b9fa7b1..99ead467f74 100644
--- a/app/services/groups/create_service.rb
+++ b/app/services/groups/create_service.rb
@@ -33,7 +33,7 @@ module Groups
     private
 
     def after_build_hook(group, params)
-      # overriden in EE
+      # overridden in EE
     end
 
     def create_chat_team?
diff --git a/app/services/groups/update_service.rb b/app/services/groups/update_service.rb
index 9ff1da270e2..787445180f0 100644
--- a/app/services/groups/update_service.rb
+++ b/app/services/groups/update_service.rb
@@ -31,7 +31,7 @@ module Groups
     private
 
     def before_assignment_hook(group, params)
-      # overriden in EE
+      # overridden in EE
     end
 
     def after_update
diff --git a/app/services/system_note_service.rb b/app/services/system_note_service.rb
index ec6c306227b..ea8ac7e4656 100644
--- a/app/services/system_note_service.rb
+++ b/app/services/system_note_service.rb
@@ -360,7 +360,7 @@ module SystemNoteService
   # author      - User performing the change
   # branch_type - 'source' or 'target'
   # old_branch  - old branch name
-  # new_branch  - new branch nmae
+  # new_branch  - new branch name
   #
   # Example Note text:
   #
diff --git a/spec/features/issues/gfm_autocomplete_spec.rb b/spec/features/issues/gfm_autocomplete_spec.rb
index c22ad0d20ef..986f3823275 100644
--- a/spec/features/issues/gfm_autocomplete_spec.rb
+++ b/spec/features/issues/gfm_autocomplete_spec.rb
@@ -278,7 +278,7 @@ describe 'GFM autocomplete', :js do
     end
   end
 
-  # This context has jsut one example in each contexts in order to improve spec performance.
+  # This context has just one example in each contexts in order to improve spec performance.
   context 'labels', :quarantine do
     let!(:backend)          { create(:label, project: project, title: 'backend') }
     let!(:bug)              { create(:label, project: project, title: 'bug') }
diff --git a/spec/features/projects/blobs/edit_spec.rb b/spec/features/projects/blobs/edit_spec.rb
index 6e6c299ee2e..1522a3361a1 100644
--- a/spec/features/projects/blobs/edit_spec.rb
+++ b/spec/features/projects/blobs/edit_spec.rb
@@ -77,7 +77,7 @@ describe 'Editing file blob', :js do
         click_link 'Preview'
         wait_for_requests
 
-        # the above generates two seperate lists (not embedded) in CommonMark
+        # the above generates two separate lists (not embedded) in CommonMark
         expect(page).to have_content("sublist")
         expect(page).not_to have_xpath("//ol//li//ul")
       end
diff --git a/spec/features/projects/wiki/markdown_preview_spec.rb b/spec/features/projects/wiki/markdown_preview_spec.rb
index 49244c53a91..49058d1372a 100644
--- a/spec/features/projects/wiki/markdown_preview_spec.rb
+++ b/spec/features/projects/wiki/markdown_preview_spec.rb
@@ -170,7 +170,7 @@ describe 'Projects > Wiki > User previews markdown changes', :js do
         fill_in :wiki_content, with: "1. one\n  - sublist\n"
         click_on "Preview"
 
-        # the above generates two seperate lists (not embedded) in CommonMark
+        # the above generates two separate lists (not embedded) in CommonMark
         expect(page).to have_content("sublist")
         expect(page).not_to have_xpath("//ol//li//ul")
       end