1. Excellent
   "he did a not half bad job";
   - bang-up [N. Amer, informal], bully [informal], corking [Brit, informal], cracking [Brit, informal], dandy [informal], great, groovy [informal], keen, neat, nifty [informal], not bad [informal], peachy, slap-up [informal], swell [informal], smashing [Brit, informal], old, grouse [Austral, NZ, informal], ripper [Austral, informal], lovely

See also: good