amplify

(v) increase in size, volume or significance
- Her terror was magnified in her mind
magnify,
(v) to enlarge beyond bounds or the truth
- tended to romanticize and exaggerate this "gracious Old South" imagery
exaggerate, hyperbolise, hyperbolize, overstate, magnify, overdraw,
(v) exaggerate or make bigger
- The charges were inflated
inflate, expand, blow up,
(v) increase the volume of
- amplify sound

magnify exaggerate hyperbolise hyperbolize overstate overdraw inflate expand blow up

downplay minimise understate minimize