No. An understatement is litotes, a statement which minimizes what it is talking about. "The United States has some debt problems" is an understatement because the United States has a huge debt problem. "Robert Wadlow was a bit taller than the average" is an understatement because he was the tallest man ever.
An incomplete expression is one which is not finished. "Oh, for--! Give me that!" includes an incomplete expression.
baffling, bewildering
Tah Dah!
marked by forceful and fluent expression
Saying that the Beatles are a good band is an understatement. Saying that Beyonce is good-looking is an understatement. Saying that Harry Potter is a good book is an understatement.
While quite a specific noun, idiom could have the synonyms phrase, expression, saying, dialect, or slang.
· incomplete
baffling, bewildering
The synonyms would be noninclusive, incomplete, narrow, or limited.
Tah Dah!
appearance, expression, manner
marked by forceful and fluent expression
the synonym for condemnation is disapproval. The exact meaning is "an expression of very strong disapproval of someone or something".
understatement
Saying that the Beatles are a good band is an understatement. Saying that Beyonce is good-looking is an understatement. Saying that Harry Potter is a good book is an understatement.
A writer can use a neutral tone, simple language, or lack of embellishment to show lack of emphasis in expression. This can help convey a sense of objectivity or detachment from the subject matter.
The Age of the Understatement was created in 2007-08.
One example of using understatement in a sentence could be: "I suppose winning the lottery isn't too bad." This downplays the excitement or significance of winning the lottery, conveying the idea with less emphasis than usual.