cross-eyed vs observant

cross-eyed

adj
  • Having both eyes oriented inward, especially involuntarily. 

observant

adj
  • Alert and paying close attention; watchful. 

  • Diligently attentive in observing a law, custom, duty or principle; regardful; mindful. 

How often have the words cross-eyed and observant occurred in a corpus of books? (source: Google Ngram Viewer )