head-scratcher

noun head-scratch·er \ ˈhed-ˌskra-chər \

Definition of head-scratcher

plural head-scratchers
informal
: something that is confusing, mysterious, or hard to understand
  • We love college football for nothing if not the belief—hope even—that at any moment the unexpected could happen. Young as it is, this season has already provided its share of jaw-droppers and head-scratchers.
  • —Holly Anderson

First Known Use of head-scratcher

1902

in the meaning defined above

See Words from the same year
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to treat with excessive attention

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