arse about face vs incompetently

arse about face

adv
  • In a confused or haphazard manner. 

  • In a manner that is opposite to or the reverse of the way it should be, backwards. 

adj
  • Arranged in a confused or haphazard way; muddled. 

  • Placed or arranged the opposite way to the way it should be. 

incompetently

adv
  • In an incompetent manner. 

How often have the words arse about face and incompetently occurred in a corpus of books? (source: Google Ngram Viewer )