• by the same token

• by return of post

• by a short head

• bite someone's head off

• stand or fall by it

• by hook or by crook

• side by side

• bite off more than you can chew

• take him by surprise

• cheek by jowl

• hang by a thread

• bite his head off

• by all appearances

• buy a pig in a poke

• thereby hangs a tale

• hard done by

• by the book

• by and large

• bite the hand that feeds you

• lead him by the nose

• stick by him

• live by one's wits

• highways and byways

• buy someone off

• by leaps and bounds

• by no means

• bark is worse than his bite

• set him by the ears

• by fair means

• by the by

• stand by