Litote

A litote is a literary device that conveys something negative or unpleasant through understatement, without using overtly negative language. It functions as "a nice, almost secretive understatement."

Litotes often employ double negatives to soften harsh truths. When someone asks how poorly-made cookies taste, saying "They didn't not taste good" uses a litote to be tactful rather than saying they tasted awful.

However, not all litotes are double negatives. "She's not the sharpest tool in the shed" is a litote because it implies someone lacks intelligence without using words like "stupid" or "dumb." The negative meaning remains implied rather than explicitly stated.

Litotes can be ironic and serve as a cushioning device in communication. They allow speakers to convey criticism or disappointment gently, making them useful in everyday conversation among considerate people who want to avoid hurting others' feelings.