black up

verb

"black-up" is a 7-letter English headword indexed on PlainSpell.

The verdict

“black up” is uncommon English (outside the top frequency list), classed as a verb. The kind of spelling people second-guess.

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To become or make (something) black or darker.

Corpus desk

Index EN-black-up · black up · English

black up · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "B" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for black up
PropertyValue
Headwordblack up
LanguageEnglish
Part of speechVerb
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “black up” in English

black upranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

black up is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. 3 senses are on record.

black up has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. No close-neighbour confusable shows up for this headword in our dataset, a sign it's visually distinctive enough not to be mixed up with another word.

No explicit etymology string is stored for this entry, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct English form is black up, spelled B-L-A-C-K- -U-P.

Definition

  1. 1
    To become or make (something) black or darker.
  2. 2
    To put on or wear blackface makeup.
  3. 3
    To make something (e.g. a film, cast, story line, etc.) more racially black in character; blackenize.

Recorded use

Wiktionary example

These source excerpts show how black up appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Cantor starts blacking up, right then and there, painting his face with a burnt piece of cork.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "black up"?
"black up" is spelled B-L-A-C-K- -U-P.
What does "black up" mean?
As a verb, "black up" means: To become or make (something) black or darker.
What language does "black up" come from?
"black up" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list