Cynghanedd groes is a traditional Welsh poetic form characterized by its intricate sound patterns. It involves the use of consonance and assonance, where the end of one line rhymes with the beginning of the next. This creates a musical quality that enhances the poem's rhythm and flow. In Welsh literature, cynghanedd groes is often employed in cywydd and other forms of verse. Poets use this technique to convey emotions and themes while showcasing their linguistic skill. The complexity of cynghanedd groes makes it a distinctive feature of Welsh poetry, celebrated for its beauty and craftsmanship.