- boastful
- boasting
- boat
- boat people
- boater
- boating
- boatswain
- bob
- bobbin
- bobble
- bobby
- bobby pin
- bobby socks
- bobsleigh
- bode
- bodice
- bodily
- body
- body bag
- body building
- body odour
- body search
- body shop
- body stocking
- bodyguard
- bodywork
- boffin
- bog
- bogey
- bogeyman
- bogged down
- boggle
- boggy
- bogie
- Bogotá
- bog-standard
- bogus
- Bohemia
- bohemian
- boil
- boiled
- boiler
- boiler suit
- boiling
- boiling point
- boisterous
- bold
- boldly
- Bolivia
- Bolivian
- bollard
- bollocks
- Bolshevik
- bolster
- bolt
- bomb
- bomb disposal squad
- bombard
- bombardment
- bomber
- bomber jacket
- bombing
- bombproof
- bombshell
- bombsite
- bona fide
- bonanza
- bond
- bondage
- bonded warehouse
- bone
- bone china
- bone marrow
- bone-dry
- bone-idle
- boneless
- bonfire
- bonfire night
- bongo
- bonk
- Bonn
- bonnet
- bonny
- bonus
- bonus issue
- bony
- boo
- boob
- boob tube
- booby prize
- booby trap
- boogie
- book
- book bag
- book club
- book token
- bookbinding
- bookcase
- bookends
- bookie
- booking
- booking clerk
- booking office
- bookish
- bookkeeper
- bookkeeping
- booklet
- bookmaker
- bookmark
- booksack
- bookseller
- bookshelf
- bookshop
- bookstall
- bookstore
- bookworm
- boom
- boomerang
- boon
- boor
- boorish
- boost
- booster
- booster seat
- boot
- booth
- bootleg
- bootlegger
- booty
- booze
- boozer
- bop
- border
- borderline
- Borders
- bore
- bored
- boredom
- boring
- born
- born-again
- borne
- Borneo
- borough
- borrow
- borrower
- borrowing
- Bosnia
- Bosnia-Herzegovina
- Bosnian
- bosom
- Bosporus
- boss
- bossy
- bosun
- botanic
- botanical garden
- botanist
- botany
- botch
- both
- bother
- bothered
- Botox®
- Botswana
- bottle
- bottle bank
- bottled
- bottle-feed
- bottleneck
- bottle-opener
- bottom
- bottom line
- bottomless
- botulism
- bough
- bought
- boulder
- boulevard
- bounce
- bouncer
- bouncy
- bound
- boundary
- boundless
- bountiful
- bounty
- bouquet
- bouquet garni
- bourbon
- bourgeois
- bourgeoisie
- bout
- boutique
- bow
- bow
- bow tie
- bow window
- bowels
- bowl