black in
B2 neutral separable transitive
In simple words
To colour something completely black, like filling in a shape with a black pen.
Literal meaning: To make something black by filling it in — fully transparent.
Meanings
1 B2 neutral
To fill an area, shape, or section with solid black colour using a pen, marker, or other medium.
"The designer blacked in the background behind the logo to make it stand out."
Grammar: separable
Usage notes
Used in art, graphic design, and everyday contexts like filling in a form or diagram. Less common than 'fill in' or 'colour in' but straightforward in meaning. Also occasionally used in the context of censorship (blacking out text), though 'black out' is more standard for that.
Commonly used with
square area shape section border outline
Forms
Base
black in
I/you/we/they
3rd person
blacks in
he/she/it
Past simple
blacked in
yesterday
Past participle
blacked in
have + pp
-ing form
blacking in
continuous
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