Embellishing

A "modifier" has, just as it sounds, the role of embellishing sentences.

Kids were embellishing all the rumors.

Many people used to be mapmakers in the wonderful art of cartography. They made maps on wood and hide and paper and stone. They painted or drew. They used charcoal or carved with knives; embellishing and decorating sea monsters and far-off places where people roamed.

There would be no difficulty in embellishing the exterior with suitable architectural enrichments, if it be desired, and I think that some improvement might be effected in the parapet of the tower.

I am not embarrassing you, but embellishing you.

His many embellishings of the tale stretched the credulity of the listeners.