adjective (a)

• having a systematic arrangement; especially having elements succeeding in order according to rule(adj.all)

  Example:
  An ordered sequence.
  

  Antonym:
  disordered, unordered
  

  source: wordnet30
• disposed or placed in a particular kind of order(adj.all)

  Synonym:
  arranged
  Antonym:
  disarranged
  

  source: wordnet30
• marked by an orderly, logical, and aesthetically consistent relation of parts(adj.all)

  Synonym:
  coherent, consistent, logical
  Antonym:
  incoherent
  

  source: wordnet30