Source : Webster's Revised Unabridged Dictionary (1913)

Unseemly \Un*seem"ly\, a.
   Not seemly; unbecoming; indecent.

         An unseemly outbreak of temper.          --Hawthorne.

Unseemly \Un*seem"ly\, adv.
   In an unseemly manner.

Source : WordNet®

unseemly
     adj : 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}, {indecorous},
            {unbecoming}, {uncomely}, {untoward}]