to laugh up one's sleeve
laugh
lɑ:f
laaf
up
ʌp
ap
<i>one's</i>
wʌnz
vanz
sleeve
sli:v
sliv

Definition & Meaning of "laugh up one's sleeve"in English

to laugh up one's sleeve
01

to secretly take pleasure in something or find it amusing, particularly someone else's problems and misfortunes 

Idiom
Informal

What is the origin of the idiom "laugh up one's sleeve" and when to use it?

The origin of the idiom "laugh up one's sleeve" can be traced back to medieval times when it was customary for people to wear large, loose sleeves. The phrase signifies a hidden or secret amusement, where one suppresses laughter by covering their mouth with their sleeve to avoid drawing attention. It is used to convey a sense of smug or sly amusement, often at the expense of someone else, while attempting to conceal it from others.

Examples
He laughed up his sleeve when his rival failed the exam. 
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