spoonerism |ˈspoōnəˌrizəm|

noun
a verbal error in which a speaker accidentally transposes the initial sounds or letters of two or more words, as in "you have hissed the mystery lectures," accidentally spoken instead of the intended "you have missed the history lectures."

ORIGIN early 20th cent.: named after the Rev. W. A. Spooner (1844–1930), an English scholar who reputedly made such errors in speaking.


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