| consumptive(adjective, expensive, high-priced, pricey, pricely) |
| contributive(useful, beneficial, advantageous, lucrative, gainful) |
| convenient(good, useful, practical, helpful, beneficial) |
| cool(adjective, good, great, excellent, perfect) |
| cooperative(adjective, useful, beneficial, advantageous) |
| copacetic(adjective, good, great, excellent, perfect) |
| cost-consuming(adjective, expensive, high-priced, pricey, pricely) |
| cost effective |
| cost intensive(adjective, expensive, high-priced, pricey, pricely) |
| costive(adjective, expensive, high-priced, pricey, pricely) |
| crack(bad, pleasant, fine, select, exclusive) |
| crackerjack(adjective, good, great, excellent, perfect) |
| critical(adjective, big, significant, substantial, vital) |
| crucial(big, significant, substantial, useful, vital) |
| decent(good, worthy, honorable, reputable, venerable) |
| decisive(tough, energetic, big, significant, substantial) |
| dream(adjective, good, great, excellent, perfect) |
| durable(significant, useful, large, practical, effective) |
| dynamic(tough, energetic, effective, adept, effectual) |
| economic(tough, energetic, effective, adept, effectual) |