Final answer:
James Joyce is considered the most outstanding modernist in English/Irish literature, particularly for his work on Ulysses.
Step-by-step explanation:
James Joyce is often regarded as the most outstanding modernist in English/Irish literature. His innovative literary style revolutionized the narrative form. Joyce's Ulysses and A Portrait of the Artist as a Young Man are significant examples of his experimental approach, where the focus is much more on internal character consciousness than on external events. This introspective style embodies the essence of modernist literature, which emphasizes psychological depth and fragmented structure.
Other notable contributors to this era include T.S. Eliot, Virginia Woolf, and Ernest Hemingway, who are revered for their unique contributions to the narrative form and literary modernism. However, Joyce's complex and abstract methods remain emblematic of the modernist ideal. His works challenged readers and influenced countless authors, cementing his place as a tour de force in modern literary history.