Verb overemphasise has 1 sense

• overemphasise(v = verb.communication) overemphasize, overstress - place special or excessive emphasis on; "I cannot overemphasize the importance of this book"
is one way to amplify, exaggerate, hyperbolise, hyperbolize, magnify, overdraw, overstate
Sample sentences:
Somebody ----s something
Somebody ----s that CLAUSE