adjunctive
  (a.)附屬的
  ad·junc·tive /əˈʤəŋ(k)tɪv, æ-/ 形容詞
  附屬的,輔助的
  Ad·junc·tive a.  Joining; having the quality of joining; forming an adjunct.
  Ad·junc·tive, n. One who, or that which, is joined.
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  adjunctive
       adj : joining; forming an adjunct