tmesis
noun /ˈtmiːsɪs/,  /təˈmiːsɪs/
  /təˈmiːsɪs/
[uncountable, countable] (plural tmeses 
 (linguistics) /ˈtmiːsiːz/,  /təˈmiːsiːz/
  /təˈmiːsiːz/
)- the use of a word or words in the middle of another word, for example ‘abso-bloody-lutely’Word Originmid 16th cent.: from Greek tmēsis ‘cutting’, from temnein ‘to cut’.