ameliorate russian

• улу́чшить

  to improve, to make better, to ameliorate, to amend

• улучша́ть

  to improve, to make better, to ameliorate, to amend

• улучша́ться

  to improve, to ameliorate, to take a turn for the better

• улу́чшившийся

  improved, ameliorated, bettered