bungled vs half-ass

bungled

adj
  • Incompetently performed; ruined through incompetent action; botched up. 

half-ass

adj
  • Produced in an incompetent or desultory manner, or of something lacking in quality or substance; of low rank; incompetent. 

verb
  • To perform a task incompletely or carelessly. Usually considered derogatory or insulting. 

How often have the words bungled and half-ass occurred in a corpus of books? (source: Google Ngram Viewer )