antecedent vs ex-

antecedent

adj
  • Earlier, either in time or in order. 

  • Presumptive. 

noun
  • The first term of a ratio, i.e. the term a in the ratio a:b, the other being the consequent. 

  • An ancestor. 

  • Previous principles, conduct, history, etc. 

  • Any thing that precedes another thing, especially the cause of the second thing. 

  • A word, phrase or clause referred to by a pronoun. 

  • The first of two subsets of a sequent, consisting of all the sequent's formulae which are valuated as true. 

  • The conditional part of a hypothetical proposition, i.e. p→q, where p is the antecedent, and q is the consequent. 

ex-

prefix
  • former, but still living (almost always used with a hyphen) 

  • out of 

  • outside 

  • Lacking. 

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