to produce better; ameliorate the condition of; rise in price, quality, capability, estimation, or even the want; bring into a much better, higher, much more desirable, or maybe more profitable state: because, to boost your head by research; to improve the kinds of animals; to improve land by careful tillage.
to make to feature or account; use profitably; take advantage of: as, to enhance the opportunity; to improve the occasion.
to boost in force or quantity; intensify whatsoever.
To grow better by any means; be exemplary or even more favorable; advance in goodness, knowledge, knowledge, amount, price, etc.: as, his health is improving; the price tag on cotton gets better daily.