English English Wikipedia has an article on:soft mutationWikipedia Noun soft mutation (countable and uncountable, plural soft mutations) (linguistics) An alteration of the initial consonant of a word which occurs in certain Celtic languages under particular linguistic circumstances; lenition. Translations word-initial consonant alteration Breton: kemmadur dre vlotaat (br) m Catalan: lenició Cornish: treylyans medhel m French: mutation adoucissante f, lénition (fr) f Irish: séimhiú m Italian: mutazione dolce f Scottish Gaelic: sèimheachadh m Spanish: lenición (es) Welsh: treiglad meddal m Wikiwand - on Seamless Wikipedia browsing. On steroids.