Flatten
Both words in one sentence
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Danger Mouse has DM knocking on "the Door of Doom" only to have it then fall off its hinges and flatten him and Penfold.
Source: Door of Doom
Cite this Source
Knocking and Flatten. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/flatten/knocking
Flatten & Knocking. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/flatten/knocking>.
Knocking or Flatten. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/flatten/knocking.
Google Ngram Viewer shows how "flatten" and "knocking" have occurred on timeline