blacken
verb /ˈblækən/
  /ˈblækən/
Verb Forms
| present simple I / you / we / they blacken |    /ˈblækən/   /ˈblækən/  | 
| he / she / it blackens |    /ˈblækənz/   /ˈblækənz/  | 
| past simple blackened |    /ˈblækənd/   /ˈblækənd/  | 
| past participle blackened |    /ˈblækənd/   /ˈblækənd/  | 
| -ing form blackening |    /ˈblækənɪŋ/   /ˈblækənɪŋ/  | 
- [transitive, intransitive] blacken (something) to make something black; to become black
- Their faces were blackened with soot.
 - Smoke had blackened the walls.
 - rows of blackened teeth
 - There was a row of brick houses, blackened by smoke.
 - The fruit blackens and spoils rather quickly.
 
 - [transitive] blacken somebody’s name/reputation/character to say unpleasant things that give people a bad opinion of somebody
- He accused the newspaper of trying to blacken his name.