Understatement

(n.) The act of understating, or the condition of being understated; that which is understated; a statement below the truth.

Thesaurus Entries

abstractionism, coloring, deformation, distortion, exaggeration, expressionism, false coloring, falsification, garbling, hyperbole, inaccuracy, injustice, litotes, miscoloring, misdrawing, mispainting, misquotation, misreport, misrepresentation, misstatement, misteaching, nonrealism, overdrawing, overstatement, perversion, quietness, restrainedness, restraint, simplicity, slanting, subduedness, twisting, unobtrusiveness