The initial idioms of the letter C

circulate through	circulation
Circumstance	Circumstances alter cases
circus	cite for
cite (something) chapter and verse	cite
citizen	city
city slicker	civil serpent
Civility costs nothing	civil
civvies	claim
claim a life	claim check
claim for	claim the moral high ground
claim to fame	clam up
clamber onto	clamber up
clamber	clam
clamor against	clamor for
clamor	clamp down