From Elisa Gabbert's Title TK:
Another quality I dislike in titles: a rhythmic sing-songiness, as in Then We Came to the End. All the Light We Cannot See. I Know This Much Is True. (Wally Lamb used the exact same three-foot iamb pattern twice: The Hour I First Believed.) These titles are suspiciously regular in their meter. I distrust them. As far as meter goes I think spondees make for the best, snappiest titles: White Noise. Jane Eyre. Bleak House.
Gabbert is talking of book titles here and then moves on to titling poems. When I wrote fiction and poetry, I always preferred lifting a line or word or group of words from within the work itself. I wanted the titles to arouse a little curiosity in the potential reader, who might then hear the click of the box when they read those words again in context. I also wanted something that sounded a little elevated without being too pretentious.
Though I adore Chekhov's work, so many of his stories' titles struck me as flat: The Duel, The Student, The Wife. I was perfectly happy for his stories to be written plainly; but I craved more memorable titles. Of which, to be fair, there are many: Ward 6, The Lady with the Dog, The Black Monk. His plays' titles adhere to Gabbert's terse preferences and I think cannot be improved on: Uncle Vanya. Three Sisters. The Cherry Orchard. All you need to know about those plays are in their titles.
My friend, the playwright Karyn Traut (for whom I have worn a bra and a muumuu-type thing onstage, though thankfully not in the same production), shared this tip from a class I took with her many years ago: The title is the poem of the play. I like that idea -- not only a summing-up, more than a declarative description. Connotation, not denotation.