ill vs suicidal

ill

adj
  • Extremely bad (bad enough to make one ill). Generally used indirectly with to be. 

  • Unwell in terms of health or physical condition; sick. 

  • Sublime, with the connotation of being so in a singularly creative way. 

  • Indicative of unkind or malevolent intentions; harsh, cruel. 

  • Having an urge to vomit. 

  • Unpropitious, unkind, faulty, not up to reasonable standard. 

adv
  • Not well; imperfectly, badly 

noun
  • A physical ailment; an illness. 

  • Harm or injury. 

  • PCP, phencyclidine. 

  • Evil; moral wrongfulness. 

  • Trouble; distress; misfortune; adversity. 

verb
  • To behave aggressively. 

suicidal

adj
  • Pertaining to suicide. 

  • Likely to commit, or to attempt to commit, suicide. 

  • Extremely reckless. 

  • Highly likely to certain to result in the deaths of the participants; dangerous or reckless to such a degree as to be tantamount to suicide for those taking part. 

noun
  • Someone suicidal; someone likely to kill themselves. 

How often have the words ill and suicidal occurred in a corpus of books? (source: Google Ngram Viewer )