improvable

a. [ From Improve. ] 1. Capable of being improved; susceptible of improvement; admitting of being made better; capable of cultivation, or of being advanced in good qualities. [ 1913 Webster ]

Man is accommodated with moral principles, improvable by the exercise of his faculties. Sir M. Hale. [ 1913 Webster ]

I have a fine spread of improvable lands. Addison. [ 1913 Webster ]

2. Capable of being used to advantage; profitable; serviceable; advantageous. [ 1913 Webster ]

The essays of weaker heads afford improvable hints to better. Sir T. Browne.

-- Im*pro"a*ble*ness, n. -- Im*prov"a*bly, adv. [ 1913 Webster ]