Synonyms for Practicing:

adj.

acting (adjective)
deputy, functioning, pro tem, temporary, surrogate, operating, acting, performing, working, alternate.
utilizing (adjective)
using.

n.

godly, holy, pious, religious, puritanical, observant, ascetic, orthodox, spiritual, devout. practicing (noun)
active.

v.

applying (verb)
exercising, Utilizing, using, Exerting, Employing, Applying, implementing, serving, Effecting.
behaving (verb)
proceeding, conducting, Deporting, Comporting, Doing, Behaving.
performing music (verb)
playing, jamming, Harmonizing, soloing, Serenading, singing.

Other synonyms:

Other relevant words:
devout, spiritual, active, godly, observant, holy, religious, ascetic, pious, orthodox, puritanical, acting.

Usage examples for practicing

  1. " Been practicing I see," he remarked. – The Riflemen of the Miami by Edward S. Ellis
  2. Where do they do their practicing – Sube Cane by Edward Bellamy Partridge