Nonsense

wiktionary

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From non-(“no, none, lack of”) +‎ sense, from c. 1610. Compare the semantically similar West Frisian ûnsin(“nonsense”), Dutch onzin(“nonsense”), German Unsinn(“nonsense”), English unsense(“nonsense”).

etymonline

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nonsense (n.)

"that which is lacking in sense, language or words without meaning or conveying absurd or ridiculous ideas," 1610s, from non- "not" + sense (n.); perhaps influenced by French nonsens. Since mid-20c., non-sense, with the hyphen, has been used to distinguish the meaning "that which is not sense, that which is different from sense," not implying absurdity.