The Collaborative International Dictionary of English v.0.48:

Practice \Prac"tice\, v. t. [imp. & p. p. Practiced; p. pr. &
   vb. n. Practicing.] [Often written practise, practised,
   practising.]
   1. To do or perform frequently, customarily, or habitually;
      to make a practice of; as, to practice gaming. "Incline
      not my heart . . . practice wicked works." --Ps. cxli. 4.
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   2. To exercise, or follow, as a profession, trade, art, etc.,
      as, to practice law or medicine.
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   2. To exercise one's self in, for instruction or improvement,
      or to acquire discipline or dexterity; as, to practice
      gunnery; to practice music.
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   4. To put into practice; to carry out; to act upon; to
      commit; to execute; to do. "Aught but Talbot's shadow
      whereon to practice your severity." --Shak.
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            As this advice ye practice or neglect. --Pope.
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   5. To make use of; to employ. [Obs.]
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            In malice to this good knight's wife, I practiced
            Ubaldo and Ricardo to corrupt her.    --Massinger.
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   6. To teach or accustom by practice; to train.
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            In church they are taught to love God; after church
            they are practiced to love their neighbor. --Landor.
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Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "practicing":
   acting, active, behavioral, compliant, conforming, conscientious,
   constant, devoted, devout, duteous, dutiful, faithful, functional,
   functioning, inaction, loyal, meticulous, mindful, observant,
   operating, operational, performing, punctilious, punctual,
   regardful, scrupulous, serving, true, working