及物动词
1. （使）变黑；弄黑；涂黑
To blacken something means to make it black or very dark in colour. Something that blackens becomes black or very dark in colour.
2. 诬蔑；玷污；给…抹黑
If someone blackens your character, they make other people believe that you are a bad person.
1. make or become black
e.g. The smoke blackened the ceiling
The ceiling blackened
Synonym: melanizemelanisenigrifyblack
2. burn slightly and superficially so as to affect color
e.g. The cook blackened the chicken breast
The fire charred the ceiling above the mantelpiece
the flames scorched the ceiling