| verb | surpass in excellence “She bettered her own record” |
| verb | to make better “The editor improved the manuscript with his changes” |
| verb | get better “The weather improved toward evening” |
| adjective | changing for the better |
| better | noun | the superior one of two alternatives |
| betterment | noun | the act of relieving ills and changing for the better |
| improvement | noun | the act of improving something |
| improver | noun | someone devoted to the promotion of human welfare and to social reforms |
| amendable | adjective | capable of being corrected by additions |
| ameliorative | adjective | tending to ameliorate |
| amelioratory | adjective | tending to ameliorate |
| amelioration | noun | the act of relieving ills and changing for the better |
| meliorative | adjective | tending to ameliorate |
| melioration | noun | a condition superior to an earlier condition |