noun

a statement that represents something as better or worse than it really is.

it would be an exaggeration to say I had morning sickness, but I did feel queasy

overstatement,overemphasis,magnification,amplification,aggrandizement,overplaying,dramatization,overdramatization,enhancement,elaboration,over-elaboration,embellishment,over-embellishment,embroidery,hyperbole,overkill,gilding the lily,purple prose,puffery