This is the ideal reference source for all speakers and learners of contemporary Welsh. Features include authentic examples, particular attention to areas of confusion and difficulty, an extensive index and cross-referencing, initial consonant mutations marked throughout, separate sections on communicative functions, and notes on variation between dialects and on formal written language. The third edition has been revised and updated throughout to offer more examples, additional appendices, inclusion of IPA phonetic symbols, and expanded sections on further reading. It is suitable for use in schools, colleges, universities, and adult classes at all levels.