al·le·gret·to /ˌæləˈgrɛ(ˌ)to, ˌɑlə-/
  (ad.)稍快地快板
  Al·le·gret·to a.  Mus. Quicker than andante, but not so quick as allegro.  -- n. A movement in this time.
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  allegretto
       adj : (of tempo) faster than allegro
       n : a quicker tempo than andante but not as fast as allegro
       adv : in a moderately quick tempo; "play this more allegretto"