Dutch poet whose use of surreal (Surrealism) language and imagery influenced a generation of post-World War II poets known as the Experimentalists. His verse, traditional in form, is characterized as romantic and metaphysical. He was a linguistic innovator, often coining new words based on the terminology of science and scholarship.

In his first commercially published volume of poetry, Afvaart (1931; “Departure”), Achterberg introduced a theme that permeates his oeuvre: the magical power of language, notably his belief that poetry could revitalize the beloved. He often used apostrophe to address this beloved, which represents such things as a lover, God, death, beauty, poetry, and the absolute. His second volume of verse, Eiland der ziel (1939; “Island of the Soul”), treats the theme with optimism, but the tone of his next book, Dead End (1940), is one of disappointment.

A four-volume anthology, Cryptogamen (1946–61; “Cryptogamia”), which is translated into many languages, includes Eiland der ziel and Sneeuwwitje (1949; “Snow White”). Some of Achterberg's other works are Reiziger “doet” Golgotha: een gedicht (1940; A Tourist Does Golgotha, and Other Poems), Stof (1946; “Stuff”), Hoonte (1949; “Insulted”), Voorbij de laatste stad (1955; “Past the Last City”), and Verzamelde gedichten (1963; “Collected Verses”). Collections of Achterberg's poetry in translation include Hidden Weddings: Selected Poems (1987) and Selected Poems of Gerrit Achterberg: But This Land Has No End (1989).