pit-a-patˈpit-a-ˌpat adverb informal 
pitter-patter
pitter-patter- cost-effective
- cost-effectively
- cost-effectiveness
- Costello, Lou
- costermonger
- costing
- costliness
- costly
- cost of living
- cost-per-action
- cost price
- costume
- costume drama
- costume jewellery
- cosy
- Così fan tutte
- cot
- cot death
- coterie
- coterminous
- Cotswolds
- cottage
- cottage cheese
- cottage hospital
- cottage industry