conflict-free vs zephyrless

conflict-free

adj
  • Without any conflict or interference with anything else. 

  • Not being sold to finance fighting in areas of conflict. 

  • Not involving any serious disagreement or argument. 

zephyrless

adj
  • Without a zephyr. 

How often have the words conflict-free and zephyrless occurred in a corpus of books? (source: Google Ngram Viewer )