D defs.my
Entry 1 sense Webster, 1913

Litotes

/(lī"tō̇*tēz)/ · Li·to·tes · IPA /laɪˈtəʊ.tiːz/
01 n. A diminution or softening of statement for the sake of avoiding censure or increasing the effect by contrast with the moderation shown in t…
  1. 1.
    A diminution or softening of statement for the sake of avoiding censure or increasing the effect by contrast with the moderation shown in the form of expression; a form of understatement; as, “ a citizen of no mean city,” that is, of an illustrious city; or, “not bad”, meaning “good”.(Rhet.)