bettering

(verb) surpass in excellence. Synonyms: better, break. Examples: "She bettered her own record." "Break a record."

(verb) to make better. Synonyms: better, improve, amend, ameliorate, meliorate. Example: "The editor improved the manuscript with his changes."

(verb) get better. Synonyms: better, improve, ameliorate, meliorate. Example: "The weather improved toward evening."

(adj) changing for the better. Synonyms: bettering (vs. worsening).