crabbed vs difficult to read

crabbed

adj
  • Pointed at an angle to the runway during approach and landing to compensate for a crosswind. 

  • Cramped, bent. 

  • Bad-tempered or cantankerous. 

  • Crowded together and difficult to read. 

  • Performed with one's aircraft pointed at an angle to the runway to compensate for a crosswind; performed with nonzero crab. 

difficult to read

How often have the words crabbed and difficult to read occurred in a corpus of books? (source: Google Ngram Viewer )