Circus
Cousin
Course
Craven
Cooler
Cougar
A science word that is six letters ans starts with the letter c is convex.
Tactic.
carbon
Cello is a five letter word that sounds like six letters when pronounced. The letter c is pronounced ch to make the word sound like six letters.
raCisM racism
The word is picnic.
Carhop
compelconsulcorralcarnal
cycles
CAREER CHEESE
cocoon cuckoo celtics
caftan