WordWeb Online

1. Changing for the better
   "If more employment is provided, a society for bettering the condition of the poor is established"

1. Surpass in excellence
   "She bettered her own record"
   - break
    
2. To make better
   - improve, amend, ameliorate, meliorate
    
3. Get better
   - improve, ameliorate, meliorate

See also: ameliorating, ameliorative, amelioratory, amendatory, betterment, corrective, meliorative, remedial

Type of: alter, change, change state, exceed, modify, outdo, outgo [archaic], outmatch, outperform, outstrip, surmount, surpass, turn

Antonym: worsen, worsening

Encyclopedia: Better