occasional

(ə kāz̸hə nəl, ō-)

adjective

  1. occurring on a particular occasion
  2. of or for a special occasion: occasional verse
  3. acting only on special occasions
  4. of irregular occurrence; happening now and then; infrequent
  5. designating chairs, tables, etc. intended for occasional or auxiliary use
  6. being an occasion ()

See occasional in American Heritage Dictionary 4

adjective
  1. a. Occurring from time to time. See Synonyms at periodic.
    b. Not habitual; infrequent: took an occasional glass of wine.
  2. Created for a special occasion: occasional verse.
  3. Intended for use as the occasion requires: an occasional chair.
  4. Acting as a cause.
  5. Acting in a specified capacity from time to time: an occasional hunter.

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