1. Not capable of being improved on
   - unexceeded, unsurpassed

See also: best

• trench
• trench coat
• trench fever
• trench foot
• trench knife
• trench mortar
• trench mouth
• trench warfare
• trenchancy
• trenchant
• trenchantly
• trencher
• trencherman
• trenching spade
• trend
• trend analysis
• trend line
• trend-setter
• trendily
• trendiness
• trendsetting
• trendy
• Trent
• Trent River
• Trental