Final answer:
It is false that Oscar Wilde only wrote comedies; he also delved into genres involving tragic and philosophical themes like in 'The Picture of Dorian Gray' and his other poetic works.
Step-by-step explanation:
The statement that Oscar Wilde was only a comedic playwright and never experimented with other genres is false. Wilde is indeed known for his Comedy of Manners, which wittily critiqued social norms, as seen in works like The Importance of Being Earnest and Lady Windermere's Fan.
However, Wilde’s repertoire included other genres as well. He explored tragic and philosophical themes in his novel 'The Picture of Dorian Gray' and in his fairy tales.
Additionally, his poem 'The Ballad of Reading Gaol' reflects on his own prison experience addressing themes of suffering and injustice.