brush off vs reckon without

brush off

verb
  • To disregard (something), to dismiss or ignore (someone), as unimportant. 

  • Used other than figuratively or idiomatically: see brush, off. To remove something with a brush. 

reckon without

verb
  • To ignore; to fail to consider. 

  • Used other than figuratively or idiomatically: see reckon, without. 

How often have the words brush off and reckon without occurred in a corpus of books? (source: Google Ngram Viewer )