"sweetening" in the noun sense
1. sweetening, sweetener
something added to foods to make them taste sweeter
2. enhancement, sweetening
an improvement that makes something more agreeable
3. sweetening
the act of adding a sweetener to food
"sweetening" in the verb sense
1. sweeten, dulcify, edulcorate, dulcorate
make sweeter in taste
2. sweeten
make sweeter, more pleasant, or more agreeable
"sweeten a deal"
Source: WordNet® (An amazing lexical database of English)
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