deliberate vs thoughtless

deliberate

adj
  • Formed with deliberation; carefully considered; not sudden or rash. 

  • Of a person, weighing facts and arguments with a view to a choice or decision; carefully considering the probable consequences of a step; slow in determining. 

  • Done on purpose; intentional. 

  • Not hasty or sudden; slow. 

verb
  • To consider the reasons for and against anything; to reflect. 

  • To consider carefully; to weigh well in the mind. 

thoughtless

adj
  • Marked by or showing lack of due thought or care; careless. 

  • Lacking thought or consideration. 

  • Inconsiderate, inattentive. 

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