Bet·ter v. t. [imp. & p. p. Bettered p. pr. & vb. n. Bettering.]
  1. To improve or ameliorate; to increase the good qualities of.
     Love betters what is best.   --Wordsworth.
     He thought to better his circumstances.   --Thackeray.
  2. To improve the condition of, morally, physically, financially, socially, or otherwise.
     The constant effort of every man to better himself.   --Macaulay.
  3. To surpass in excellence; to exceed; to excel.
     The works of nature do always aim at that which can not be bettered.   --Hooker.
  4. To give advantage to; to support; to advance the interest of. [Obs.]
  Weapons more violent, when next we meet,
  May serve to better us and worse our foes.   --Milton.
  Syn: -- To improve; meliorate; ameliorate; mend; amend; correct; emend; reform; advance; promote.