in·de·co·rous /(ˌ)ɪnˈdɛk(ə)rəs; ˌɪndɪˈkorəs, ˈkɔr-/
  (a.)無體的,不合禮節的
  In·de·co·rous a.  Not decorous; violating good manners; contrary to good breeding or etiquette; unbecoming; improper; out of place; as, indecorous conduct.
     It was useless and indecorous to attempt anything more by mere struggle.   --Burke.
  Syn: -- Unbecoming; unseemly; unbefitting; rude; coarse; impolite; uncivil; ill-bred.
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  indecorous
       adj 1: lacking propriety and good taste in manners and conduct;
              "indecorous behavior" [syn: indelicate] [ant: decorous]
       2: not in keeping with accepted standards of what is right or
          proper in polite society; "was buried with indecent
          haste"; "indecorous behavior"; "language unbecoming to a
          lady"; "unseemly to use profanity"; "moved to curb their
          untoward ribaldry" [syn: indecent, unbecoming, uncomely,
           unseemly, untoward]