1. Introduction; 2. Root shapes and verbal classes; 3. The role of lenition; 4. Future stem marking; 5. Failure of future stem marking; 6. The future stem in Ulster Irish; 7. The verbal endings; 8. Conclusions. Incl. appendix containing paradigms of 1st and 2nd conjugation verbs cuireann ‘places’ and ceannaíonn ‘buys’ resp. from the dialects of Ros Goill (Donegal), Erris (Mayo), Cois Fharraige (Galway) and west Kerry.