understatement

noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about understatement at Wordnik → Where our words come from →

1. A figure of speech whereby something is made to seem smaller or less important than it actually is, either through phrasing or lack of emphasis, often for ironic effect.

   A master of understatement

2. An instance of such phrasing or lack of emphasis; an incomplete statement.

   Now that's an understatement.

3. An incomplete disclosure that intentionally withholds relevant information.