Back Kemmadurioù ar brezhoneg Breton Mutaciones consonánticas en bretón Spanish Mutations du breton French
Like all modern Celtic languages, Breton is characterised by initial consonant mutations, which are changes to the initial sound of a word caused by certain syntactic or morphological environments. In addition, Breton, like French, has a number of purely phonological sandhi features caused when certain sounds come into contact with others.
The mutations are divided into four main groups, according to the changes they cause: soft mutation (Breton kemmadurioù dre vlotaat), hard mutation (kemmadurioù dre galetaat), spirant mutation (kemmadurioù c'hwezhadenniñ) and mixed mutation (kemmadurioù mesket). There are also a number of defective (or incomplete) mutations which affect only certain words or certain letters.