sweeten
verb /ˈswiːtn/
  /ˈswiːtn/
Verb Forms
Idioms | present simple I / you / we / they sweeten |  /ˈswiːtn/  /ˈswiːtn/ | 
| he / she / it sweetens |  /ˈswiːtnz/  /ˈswiːtnz/ | 
| past simple sweetened |  /ˈswiːtnd/  /ˈswiːtnd/ | 
| past participle sweetened |  /ˈswiːtnd/  /ˈswiːtnd/ | 
| -ing form sweetening |  /ˈswiːtnɪŋ/  /ˈswiːtnɪŋ/ | 
- sweeten something to make food or drinks taste sweeter by adding sugar, etc.
- sweeten somebody (up) (informal) to try to make somebody more willing to help you, agree to something, etc. by giving them money, praising them, etc.Topics Discussion and agreementc2                                     
- sweeten something to make something more pleasant or acceptable- The fall in inflation did little to sweeten news of massive job losses.
 
Idioms 
sugar/sweeten the pill 
- to do something that makes an unpleasant situation seem less unpleasant synonym sugar-coat