• Etymology Today from M-W: juxtapose \JUK-stuh-pohz\
: to place side by side

A back-formation is a word that has come about through the removal of a prefix or a suffix from a longer word. Etymologists think "juxtapose" is a back-formation that was created when people trimmed down the noun "juxtaposition." Historical evidence supports the idea: "juxtaposition" was showing up in English documents as early as 1654, but "juxtapose" didn't appear until 1851. "Juxtaposition" is itself thought to be a combination of Latin "juxta," meaning "near," and English "position."

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