--- a/browser/browser/preferences/fonts.ftl
+++ b/browser/browser/preferences/fonts.ftl
@@ -40,45 +40,59 @@ fonts-langgroup-japanese =
 fonts-langgroup-hebrew =
     .label = Eabhra
 fonts-langgroup-kannada =
     .label = Kannada
 fonts-langgroup-khmer =
     .label = Cmèar
 fonts-langgroup-korean =
     .label = Coirèanais
+# Translate "Latin" as the name of Latin (Roman) script, not as the name of the Latin language.
+fonts-langgroup-latin =
+    .label = Laideann
 fonts-langgroup-malayalam =
     .label = Malayalam
+fonts-langgroup-math =
+    .label = Matamataig
+fonts-langgroup-odia =
+    .label = Odia
 fonts-langgroup-sinhala =
     .label = Sinhala
 fonts-langgroup-tamil =
     .label = Taimil
 fonts-langgroup-telugu =
     .label = Telugu
 fonts-langgroup-thai =
     .label = Tàidh
 fonts-langgroup-tibetan =
     .label = Tibeitis
 fonts-langgroup-canadian =
     .label = Lidire Aonaichte Canadach
+fonts-langgroup-other =
+    .label = Siostaman sgrìobhaidh eile
 
 ## Default fonts and their sizes
 
 fonts-default-serif =
     .label = Serif
 fonts-default-sans-serif =
     .label = Sans Serif
 fonts-minsize-none =
     .label = Chan eil gin
+fonts-allow-own =
+    .label = Leig le duilleagan na cruthan-clò aca fhèin a thaghadh seach na thagh thu gu h-àrd
+    .accesskey = a
 
 ## Text Encodings
 ##
 ## Translate the encoding names as adjectives for an encoding, not as the name
 ## of the language.
 
+fonts-languages-fallback-header = Còdachadh teacsa airson susbaint dhìleabach
+fonts-languages-fallback-desc = Thèid an còdachadh teacsa seo a chleachdadh airson susbaint dhìleabach nach eil a’ cur an cèill dè còdachadh a chleachdas e.
 fonts-languages-fallback-name-auto =
     .label = A' bhun-roghainn airson an sgeama ionadail làithrich
 fonts-languages-fallback-name-arabic =
     .label = Arabais
 fonts-languages-fallback-name-baltic =
     .label = Baltach
 fonts-languages-fallback-name-ceiso =
     .label = Meadhan-Eòrpach, ISO