Word that means to become better?

What is the word I am looking for that means to become better, progress more. Example, mimesis means to pretend to better then what you are. I want to know the word that means to actually progress without lying.

Please

2014-01-10T12:33:36Z

Improvement was not the word I was looking for, but I'll go with that. Thank you anyways.

Battleaxe2014-01-10T12:26:19Z

Favorite Answer

Improve

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?2014-01-10T12:26:04Z

Improve

To become better is to improve.

By the way, mimesis simply means imitation or mimicry.

?2014-01-10T14:46:11Z

Ameliorate

Wizened wizard2014-01-10T12:51:59Z

Improve, ameliorate, amend, better, enhance, enrich, help, meliorate, perfect, refine, upgrade, correct, emend, rectify, reform, remediate, remedy; edit, fine-tune, redraft, refurbish, rehab, rehabilitate, revamp, revise, rework; beef (up), boost, fortify, intensify, reinforce (also reenforce), strengthen; fine, hone, polish; retouch, touch up