Bring (something) on

Bring (something) to (someone's) attention

Bring (something) to a head

Bring about (something)

Bring down the house

Bring home the bacon

Bring home the importance of (something) to (someone)

Bring some new facts to light

Bring to mind

Bring up

Bring up (something)

Bring up the rear

Broad in the beam

Brown bag it

Brush up on (something)

Brush with the law

BS

BSc

Buck for (something)

Buckle down to (do something)

Budget crunch/squeeze

Bug (someone)

Bug-eyed

Build (something) to order

Build a case (against someone)

Build a fire under (someone)

Build castles in the air/in Spain

Build up (someone or something)

Build up to (something)

Bull in a china shop

Bump into (someone)

Bump off (someone)

Bundle of nerves

Burden of proof

Burn (oneself) out

Burn (someone) in effigy

Burn (something) to a crisp

Burn a hole in one's pocket

Burn down

Burn one's bridges behind one

Burn one's fingers

Burn the candle at both ends

Burn the midnight oil

Burn up

Burst at the seams

Burst in on (someone or something)

Burst into flames

Burst into tears

Burst onto the scene

Burst out laughing

Burst with joy

Burst with pride

Bury the hatchet

Bury/hide one's head in the sand

Business as usual

Busman's holiday

Bust a gut (to do something)

But for (someone or something)

Butt heads with (someone)

Butt in (on someone or something)

Butter (someone) up

Button one's lip

Buy (something) for a song

Buy (something) on credit

Buy (something) sight unseen

Buy a pig in a poke

Buy a stake in (something)

Buy off (someone)

Buy out (someone or something)

By a hair's breadth

By a long shot

By a mile

By a whisker

By a whisker/hair

By all accounts

By all appearances

By all means

By and by

By and large

By any means

By chance

By check

By fair means or foul

By far

By fits and starts

By hook or by crook

By leaps and bounds

By means of

By no means

By shank's mare

By the book

By the day

By the dozen

By the dozens

By the handful

By the hour

By the month

By the same token

By the seat of one's pants

By the skin of one's teeth

By the sweat of one's brow

By the way

By the week

By the year

By virtue of (something)

By way of (something or somewhere)

By way of (something)

By word of mouth

BYOB

C

C/O

CA

Calculated risk

Call (someone or something) into question

Call (someone) in

Call (someone) names

Call (someone) on the carpet

Call (something) in

Call a meeting

Call a meeting to order

Call a spade a spade

Call for (someone or something)

Call for (someone)

Call it a day/night

Call it quits

Call of nature

Call off (something)

Call on (someone)

Call out to (someone)

Call someone's bluff

Call the dogs off

Call the roll

Call the shots

Call up (someone)

Calm down

Can of worms

Can take (something) to the bank

Can't do anything with (someone or something)

Can't see beyond the end of one's nose

Can't see the forest for the trees

Can't stand (someone or something)

Can't stand/stomach (someone or something)

Can't stomach (someone or something)

Cancel (something) out

Cannot see one's hand in front of one's face

Cap and gown

Captain of industry

Card up one's sleeve

Cards are stacked against (someone)

Carried away

Carrot and stick

Carry (something) out

Carry a lot of weight with (someone or something)

Carry a motion

Carry coals to Newcastle

Carry on

Carry one's (own) weight

Carry over (something)

Carry over figures/numbers/costs

Carry the ball

Carry the day

Carry the torch

Carry the weight of the world on one's shoulders

Carry through with (something)

Carte blanche

Case in point

Case of mistaken identity

Cash cow

Cash in (something)

Cash in on (something)

Cash in one's chips

Cash on the barrelhead

Cash-and-carry

Cast a (critical/professional) eye over (someone or something)

Cast an eye over (something)

Cast around/about for (someone or something)

Cast aspersions on (someone)

Cast doubt on (someone or something)

Cast doubts on (someone or something)

Cast in the same mold

Cast one's lot in with (someone)

Cast one's vote

Cast pearls before swine

Cast the first stone

Castles in the air

Cat burglar

Cat gets one's tongue

Cat nap

Cat on a hot tin roof

Catch (someone's) eye

Catch (someone) in the act of (doing something)

Catch (someone) napping

Catch (someone) off balance

Catch (someone) off guard

Catch (someone) red-handed

Catch (someone) with their pants down

Catch a cold

Catch fire

Catch forty winks

Catch on

Catch one's breath

Catch one's death of cold

Catch sight of (someone or something)

Catch some Z's

Catch up to (someone or something)

Catch up with (someone or something)

Catch-22

Catch-as-catch-can

Caught in the middle/cross fire

Caught short

Caught unaware

Caught with one's hand in the cookie jar

Cause a stir

Cause eyebrows to raise

Cause tongues to wag

Causing a disturbance

Cave in

Cave in to (someone or something)

Caveat emptor

CD

CEO

Chalk (something) up to (something)

Chalk up (something)

Champ at the bit

Champ/chomp at the bit

Chance (something)

Chance upon (someone or something)

Change (someone's) mind

Change hands

Change horses in midstream

Change of heart

Change of pace

Change of scenery

Change one's tune

Change the subject

Charley horse

Chase rainbows

Cheapskate

Cheat on (someone)

Check-up

Cheek by jowl

Cheer (someone) on

Cheer (someone) up

Cheese (someone) off

Cheesed off

Chew (someone) out

Chew out (someone)

Chew the fat

Chew the fat with (someone)

Chew the fat/rag

Chicken and egg situation

Chicken feed

Chicken out of (doing something)

Chicken-livered

Chickens come home to roost

Chilled to the bone

Chime in

Chip in

Chip in (money)

Chip off the old block

Chips and dip

Chips are down

Chisel (someone) out of (something)

Choke (someone) up

Choke (something) off

CIA

Circle the wagons

Circulate the agenda

Circumstantial evidence

Citizen's arrest

Civil action

Civil law

Claim a life

Clam up

Clamp down on (someone or something)

Class action lawsuit

Clean bill of health

Clean slate

Clean up

Clean up one's act

Clear (someone's) name

Clear a hurdle

Clear of (something)

Clear out (of somewhere)

Clear out (something)

Clear sailing

Clear the air

Clear the decks

Clear the table

Clear up (something)

Cliffhanger

Climb the wall

Clip (someone's) wings

Clip joint

Cloak-and-dagger

Close a deal

Close at hand

Close call/shave

Close in on (someone or something)

Close one's eyes to (something)