Synonyms for Improving:

adj.

all (adjective)
up.
beneficial (adjective)
helpful, good, advantageous, beneficial, progressive, profitable, favorable, prosperous, useful, Gainful, better, successful.
reconstructing (adjective)
developing, bettering, Correcting, fixing, Elaborating, convalescent, remodeling, Repairing.

n.

developing, on the mend, convalescent, remodeling. improving (noun)
rising, up.

v.

correcting (verb)
revising, patching, Remedying, Amending, altering, Correcting, fixing, Adjusting, Repairing, Rectifying.
improving (verb)
Enhancing, Embellishing, advancing, bettering, Furthering, Enriching, Elaborating, Garnishing, upgrading, renovating, refining, Progressing.
progressing (verb)
proceeding.
restoring (verb)
reviving, Restoring, Rehabilitating, curing, reconstituting, mending, rejuvenating, darning, reconditioning, Overhauling, healing.

Other synonyms:

recovering
convalescent.
Other relevant words:
on the mend, remodeling, convalescent, up, rising, developing.

Usage examples for improving

  1. She could guide and develop him by helping and improving herself. – The Dwelling Place of Light, Complete by Winston Churchill Last Updated: March 5, 2009
  2. If I keep improving as I have done I shall be able to come over to you in the course of a few weeks. – Letters of John Keats to His Family and Friends by John Keats
  3. She was not always, to his mind, quite- the lady, though she was improving in that respect. – The Road to Understanding by Eleanor H. Porter