[sweet.en] vb sweet.ened ; sweet.en.ing vt (ca. 1552) 1: to make sweet
2: to soften the mood or attitude of
3: to make less painful or trying
4: to free from a harmful or undesirable quality or substance; esp: to remove sulfur compounds from "~ natural gas"
5: to make more valuable or attractive: as a: to increase (a pot not won on the previous deal) by anteing prior to another deal b: to place additional securities as collateral for (a loan) ~ vi: to become sweet -- sweet.en.er n