Answer
Punctuation, or the absence thereof, is a defining characteristic of Apollinaire's poetry. He deliberately eschewed conventional punctuation, believing it hindered the natural flow of language and poetic expression. This unconventional approach allowed him to create a unique and experimental style that prioritized rhythm, imagery, and the musicality of words. Apollinaire's rejection of punctuation reflects his broader avant-garde sensibilities and his desire to push the boundaries of poetic form and meaning.