The initial idioms of the letter C

caught short	caught unaware
caught unawares	caught up in
caught with (one's) hand in the cookie jar	caught with (one's) pants down
caught with one's pants down, be	caught with pants down
cause a commotion	cause eyebrows to raise and cause some raised eyeb
cause for alarm	hard feelings
lean times	cause qualms
cause raised eyebrows	cause tongues to wag
cause célèbre	cause
caution about	caution
cautious optimism	cautiously optimistic
cave	cave in
caveat lector	caveman
caviar to the general	cavil at
cazh	cease and desist