C
- call a spade a spade
- call back
- call for
- call in
- call it
- call it a day
- call it quits
- call off
- call on
- call out
- call someone's bluff
- call the shots
- call up
- call upon
- calm before the storm
- calm down
- can't be bothered
- can't help
- can't stand
- can't wait
- can of worms
- cancel out
- care for
- care of
- carried away
- carrot and stick
- carry off
- carry on
- carry out
- carry over
- carve out
- cash in
- cash out
- cast a shadow
- cast off
- cat got someone's tongue
- catch fire
- catch on
- catch one's breath
- catch up
- catch up with
- caught up
- caught with one's pants down
- cave in
- chalk up
- chalk up to
- chances are
- change of heart
- change one's mind
- change someone's mind
- chat up
- cheap and cheerful
- cheat on
- check in
- check off
- check out
- check up
- cheer up
- cherry on top
- chew out
- chicken out
- child's play
- chill out
- chime in
- chin up
- chink in the armor
- chip in
- chip off the old block
- chip on one's shoulder
- choke up
- chop down
- churn out
- circle back
- clam up
- clamp down on
- clean out
- clean up
- clear cut
- clear off
- clear out
- clear the air
- clear up
- climb down
- clock in
- clock is ticking
- clock out
- close by
- close down
- close in
- close to
- close up
- cobble together
- cock up
- cold hard cash
- cold shoulder
- cold turkey
- come about
- come across
- come along
- come and go
- come around
- come back
- come by
- come clean
- come down
- come down with
- come full circle
- come in
- come in handy
- come into being
- come of age
- come off
- come on
- come out
- come out of the closet
- come over
- come round
- come through
- come to
- come to a head
- come to an end
- come to mind
- come to one's senses
- come to terms
- come to terms with
- come to think of it
- come together
- come true
- come up
- come up with
- come what may
- comfortable in one's own skin
- compared to
- compared with
- concrete jungle
- conjure up
- connect the dots
- consist of
- contend with
- contrary to
- cook the books
- cook up
- cool down
- cool off
- cop out
- cope with
- cordon off
- couch potato
- cough up
- couldn't care less
- count down
- count on
- count one's blessings
- cover one's bases
- cover up
- crack down
- crack of dawn
- crack up
- crank up
- crash course
- cream of the crop
- creature comfort
- creep out
- crocodile tear
- crop up
- cross my heart
- cross off
- cross one's fingers
- cross out
- cross over
- cross paths
- cross the line
- cross to bear
- cry out
- cry wolf
- crystal clear
- cup of tea
- curl up
- curry favor
- cut and dried
- cut back
- cut corners
- cut down
- cut from the same cloth
- cut in
- cut it
- cut loose
- cut off
- cut one's losses
- cut one's teeth
- cut out
- cut short
- cut some slack
- cut the mustard
- cut through
- cut to the chase
- cut up
- cutting edge