nonpositive vs unacceptable

nonpositive

adj

  • Not positive. 

  • Not positive; either zero or negative. 

noun

  • Any value that is not positive. 

unacceptable

adj

  • unsatisfactory; not acceptable 

  • not conforming to accepted usage 

noun

  • Something that is not acceptable. 

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