diff --git a/locales/cy/browser/browser/zen-general.ftl b/locales/cy/browser/browser/zen-general.ftl
index bfc611182..fac5a673c 100644
--- a/locales/cy/browser/browser/zen-general.ftl
+++ b/locales/cy/browser/browser/zen-general.ftl
@@ -26,15 +26,15 @@ tab-context-zen-edit-pinned-page =
         }
     .accesskey = P
 tab-context-zen-replace-pinned-url-with-current = 
-    .label = Replace with Current URL
+    .label = Amnewid gyda'r URL Cyfredol
     .accesskey = P
 tab-context-zen-edit-pinned-url = 
-    .label = Edit…
-    .accesskey = E
+    .label = Golygu…
+    .accesskey = G
 tab-context-zen-edit-title = 
-    .label = Newid Label...
+    .label = Newid Label…
 tab-context-zen-edit-icon = 
-    .label = Newid Eicon...
+    .label = Newid Eicon…
 zen-themes-corrupted = Mae eich ffeil addasiadau { -brand-short-name } wedi'i llygru. Maen nhw wedi cael eu hailosod i'r thema rhagosodedig.
 zen-shortcuts-corrupted = Mae eich ffeil llwybr-byr { -brand-short-name } wedi'i llygru. Maen nhw wedi cael eu hailosod i'r llwybr byr rhagosodedig.
 # note: Do not translate the "<br/>" tags in the following string
@@ -53,10 +53,10 @@ zen-general-cancel-label =
 zen-general-confirm = 
     .label = Cadarnhau
 zen-pinned-tab-replaced = Mae URL y tab wedi'i binio wedi'i newid i'r URL gyfredol!
-zen-pinned-tab-url-edited = Pinned tab URL has been updated!
-zen-pinned-tab-url-invalid = That doesn't look like a valid URL.
-zen-pinned-tab-edit-url-title = Edit Pinned URL
-zen-pinned-tab-edit-url-label = Enter the URL this pinned tab should point to:
+zen-pinned-tab-url-edited = Mae URL tab wedi'i binio wedi'i ddiweddaru!
+zen-pinned-tab-url-invalid = Dyw hwn ddim yn edrych fel URL dilys.
+zen-pinned-tab-edit-url-title = Golygu URL wedi'u Pinio
+zen-pinned-tab-edit-url-label = Rhowch y URL dylai'r tab pinio hwn bwyntio at:
 zen-tabs-renamed = Mae'r tab wedi cael ei ailenwi'n llwyddiannus!
 zen-background-tab-opened-toast = Tab cefndir newydd wedi'i agor!
 zen-workspace-renamed-toast = Mae'r Man Gwaith wedi cael ei ailenwi'n llwyddiannus!
@@ -76,7 +76,7 @@ zen-icons-picker-emoji =
 zen-icons-picker-svg = 
     .label = Eiconau
 zen-emojis-picker-search = 
-    .placeholder = Search emojis
+    .placeholder = Chwilio emojis
 urlbar-search-mode-zen_actions = Gweithredoedd
 zen-site-data-settings = Gosodiadau
 zen-generic-manage = Rheoli
@@ -128,9 +128,9 @@ zen-sidebar-notification-updated-heading = Diweddariad Wedi'i Gwblhau!
 zen-sidebar-notification-updated-label = Beth sy'n newydd yn { -brand-short-name }
 zen-sidebar-notification-updated-tooltip = 
     .title = Gweld Nodiadau Rhyddhau
-zen-sidebar-notification-donate-label = Support { -brand-short-name }
+zen-sidebar-notification-donate-label = Cymorth { -brand-short-name }
 zen-sidebar-notification-donate-tooltip = 
-    .title = Donate to the project
+    .title = Cyfrannu at y prosiect
 zen-sidebar-notification-restart-safe-mode-label = Rhywbeth wedi torri?
 zen-sidebar-notification-restart-safe-mode-tooltip = 
     .title = Ailgychwyn yn y Modd Diogel
@@ -139,4 +139,4 @@ zen-window-sync-migration-dialog-message = Mae Zen bellach yn cydweddu ffenestri
 zen-window-sync-migration-dialog-learn-more = Dysgu Rhagor
 zen-window-sync-migration-dialog-accept = Iawn
 zen-appmenu-new-blank-window = 
-    .label = New Blank Window
+    .label = Ffenest Newydd Gwag