| A | B |
| let the cat out of the bag | to give a way a secret |
| let sleeping dogs lie | to not make someone angry by stirring up trouble |
| let the chips fall where they may | to do the right thing whatever the consequences |
| leave someone holding the bag | to force someone to take the blame when it should be shared |
| left out in the cold | to not tell someone or leave someone out |
| lend an ear | to pay attention and listen |
| leave no stone unturned | to make all possible efforts to carry out a task |
| knee high to a grasshopper | very young and very short |
| knock on wood | an expression to keep bad luck away |