न्यूनोक्‍ति

Also known as understating

Understatement is an expression of lesser strength than what the speaker or writer actually means or than what is normally expected. It is the opposite of embellishment or exaggeration, and is used for emphasis, irony, hedging, or humor. A particular form of understatement using negative syntax is called litotes. This is not to be confused with euphemism, where a polite phrase is used in place of a harsher or more offensive expression.