Edward Estlin Cummings, known as e.e. cummings, was a renowned American poet and writer. A few synonyms that could describe his works are avant-garde, experimental, and unconventional. Cummings was known for his unique writing style, which featured lowercase letters, unusual punctuation, and unconventional word order. His works were often classified as avant-garde and experimental due to his willingness to push the boundaries of traditional poetry. Cummings' writing could also be described as sentimental, introspective, and lyrical, especially in his love poems. His use of specific language and punctuation within those poems created a unique and unconventional form of expression that earned him a reputation as a groundbreaking writer.