English to English

adjective (a)

• incapable of reproducing(adj.all)

  Example:
  An infertile couple.
  

  Synonym:
  sterile, unfertile
  Antonym:
  fertile
  

  source: wordnet30
• Not fertile; not productive; barren; sterile; as, an infertile soil.(adjective)

  source: webster1913