| Idiom | Meaning | Example | 
| by jove | 
it happened, it is amazing
 | 
By jove! We reached our goal. We sold 15,000 tickets!
 | 
| by leaps and bounds | 
by large amounts, by a lot
 | 
The population of Calgary has  grown by leaps and bounds.
 | 
| by no means | 
not in any way, not by any stretch...
 | 
By no means is a car a good  investment. It will depreciate.
 | 
| by the by | 
(See by the way)
 | 
 | 
| by the same token | 
judging by the same rule, to be fair to both sides
 | 
By the same token, he should help with the housework.
 | 
| by the seat of your pants | 
with little money, without planning, a lick and a promise
 | 
You can't operate a business by the seat of your pants.
 | 
| by the short hairs | 
(See got you by the short hairs)
 | 
 | 
| by the skin of their teeth | 
by a little, barely
 | 
He won the election by one vote, by the skin of his teeth.
 | 
| by the way | 
in addition to what I was saying, incidentally
 | 
By the way, I heard that Ed is resigning.
 | 
| by word of mouth | 
by one person speaking to another, person to person, through the grapevine
 | 
News of his birth traveled by word of mouth. Soon everyone knew that Mary had a baby boy.
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