Y Geiriau Lletchwith (A Check-List of Irregular Words and Spelling) by D Geraint Lewis

This paperback edition is a comprehensive and useful list of irregular Welsh words, nouns, adjectives, verbs and adverbs, which often cause writers hesitation relating to spelling, accents and hyphens.  In this useful volume, these words are easily put together in their correct forms.   These 'awkward' words are listed alphabetically and bought together to provide a source of information not readily available elsewhere.