tune·less /ˈtunləs, ˈtjun-/
 (a.)不合調的,不悅耳的


 Tune·less a.
 1. Without tune; inharmonious; unmusical. “ Thy tuneless serenade.”
 How often have I led thy sportive choir,
 With tuneless pipe, beside the murmuring Loire!   --Goldsmith.
 2. Not employed in making music; as, tuneless harps.
 3. Not expressed in music or poetry; unsung. [R.]

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 tuneless
      adj : not having a musical sound or pleasing tune [syn: untuneful,
             unmelodious] [ant: tuneful]