1. To no avail
   "the city fathers tried vainly to find a solution"
   - in vain

See also: vain

• colorful
• colorfully
• colorimeter
• colorimetric
• colorimetric analysis
• colorimetrical
• colorimetry
• coloring
• coloring book
• coloring material
• colorise
• colorist
• colorize
• colorless
• colorlessness
• colors
• Colossae
• colossal
• colossally
• Colosseum
• Colossian
• Colossians
• colossus
• Colossus of Rhodes
• colostomy