| A | B | C | D | E | F | G | H | I |
| J | K | L | M | N | O | P | Q | R |
| S | T | U | V | W | X | Y | Z |
- A Bit Much
- Big Deal
- Big Fish in a Small Pond, a
- Big Mouth, have a
- Big of You (or one)
- Big On Something
- Bigger Fish to Fry (to have)
- Bite Off More Than You Can Chew
- Bite One’s Nails
- Bite Someone’s Head Off
- Bite the Bullet
- Bite the Dust
- Bite Your Tongue
- Bitter Pill to Swallow, a
- Black and Blue
- Black Out
- Blank Check
- Bless Your (His/Her) Heart
- Blessing In Disguise
- Blind Leading the Blind
- Blow a Hole in
- Blow My Mind
- Blow Off Steam
- Blow Smoke
- Blow Smoke Up Someone’s Ass
- Blow the Lid Off (something)
- Blow Your Own Horn
- Blue Blood
- Bone Of Contention, a
- Bookworm
- Bored to Death
- Bottomless Pit
- Bottoms Up
- Bounce A Check
- Brain Freeze
- Bread and Butter
- Break the Fourth Wall
- Break the Ice
- Break Up (with someone)
- Breathe a Word (to not)
- Bright and Early
- Bright-eyed and Bushy-tailed
- Bring Home (to someone)
- Bring Home the Bacon
- Broad Daylight, in
- Brown Nose, to
- Brownie Points
- Buck For Something
- Built Like a Brick Shithouse
- Bundle of Nerves, a
- Burn the Midnight Oil
- Burn Your Bridges
- Bury One’s Head In The Sand
- Bury the Hatchet
- Butterflies In Your Stomach
- Buttonhole Someone
- Buzz Off
- By All Accounts
- By and Large
- By the Book
- By the Numbers
- By the Same Token
- By the Skin of My (or one’s) Teeth
- The Bitter End, to (until)
- The Bomb vs To Bomb | American Slang