out on one's feet vs unkempt

out on one's feet

adj
  • Stupefied; dazed; nonfunctional. 

  • Standing erect but not consciously aware of one's surroundings, or only minimally aware, and having little or no ability to control one's bodily actions, as a result of physical injury or exhaustion. 

unkempt

adj
  • Disorderly; untidy; messy; not kept up. 

  • Uncombed; dishevelled. 

  • Rough; unpolished 

How often have the words out on one's feet and unkempt occurred in a corpus of books? (source: Google Ngram Viewer )