| Idiom | Meaning | Example | 
| lefty | 
left-handed person, southpaw
 | 
The ignition switch in most cars is not designed for a lefty.
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| leg up | 
(See a leg up)
 | 
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| leg work | 
walking, going to visit customers or voters
 | 
The kids delivered the notices - they did the leg work.
 | 
| lemon | 
a car with many problems, a car of low quality, seconds
 | 
When the American companies began to make small cars, there were a lot of lemons for sale.
 | 
| lend a hand | 
help someone, give me a hand
 | 
Our neighbors lend a hand when we have too much work to do.
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| lesser lights | 
people who are not as talented, not superstars
 | 
We owe our success to the lesser lights on our team - the workers.
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| lesser of two evils | 
both are bad but one is not as bad as the other
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Neither person can be trusted. Choose the lesser of two evils.
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| let a fart [B] | 
allow gas to escape,  fart, pass wind
 | 
If I let a fart in this tiny room, we won't be able to breathe.
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| let down | 
not do as expected, disappoint someone
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Don't let the team down. Please come to the game.
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| let George do it | 
let him or her do the job, wait for someone to do it
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If his attitude is let George do it, he won't succeed in our firm.
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