verb (mainly tr)1. (also intr)to make or become sweet or sweeter
2. to mollify or soften (a person)
3. to make more agreeable
4. (also intr) chemistryto free or be freed from unpleasant odours, acidic or corrosive substances, or the like
5. finance, mainly USto raise the value of (loan collateral) by adding more securities
6. informal pokerto enlarge (the pot) by adding chips