render better, improve, mend, amend, better; ameliorate, meliorate; correct; decrassify^. improve upon, refine upon; rectify; enrich, mellow, elaborate, fatten.

render better, improve, mend, amend, better; ameliorate, meliorate; correct; decrassify^. improve upon, refine upon; rectify; enrich, mellow, elaborate, fatten.