This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To place too much emphasis on or employ too much emphasis.

v. To place too much emphasis on; to overstate the importance of.

v. to emphasize excessively; to place excessive emphasis on.

v. place special or excessive emphasis on

"But to overemphasize this gap between religious and nonreligious American women in their attitudes toward gender would be to overlook the sweeping transformation in gender norms shared by religious and nonreligious Americans, men and women alike, over the last generation."

over-emphasize   

overemphasized    overemphasizes    overemphasizing   

overdraw    exaggerate    overstate    magnify    hyperbolise   

emphasise    overstress   

emphasize    reemphasize