MBD

noun

By · According to Wiktionary data (CC BY-SA) ·

"mbd" is a 3-letter English headword indexed on PlainSpell.

The verdict

“MBD” is uncommon English (frequency #87,536 among 36,575 “M” headwords), classed as a noun. The kind of spelling people second-guess.

#87,536
frequency rank, English
36,575
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Initialism of mother's brother's daughter.

Key facts for MBD
PropertyValue
HeadwordMBD
LanguageEnglish
Part of speechNoun
Letters3
Frequency rank#87,536
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “MBD” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). MBD lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

MBD is uncommon English at frequency #87,536 among 36,575 “M” headwords, classed as anoun. Rarity is why readers land here mid-draft. 9 senses are on record.

The misspelling generator found no plausible variants for MBD, a straightforward case of a spelling with little room for common typos. It is not paired with a close-neighbour confusable in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.

This entry carries no recorded etymology, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is MBD, spelled M-B-D.

Definition

  1. 1
    Initialism of mother's brother's daughter.
  2. 2
    Initialism of model-based definition.
  3. 3
    Initialism of motherboard.
  4. 4
    Initialism of minimal brain damage.
  5. 5
    Initialism of minimal brain disorder.
  6. 6
    Initialism of minimal brain dysfunction.
  7. 7
    Initialism of mosquito-borne disease.
  8. 8
    Initialism of model-based development.
  9. 9
    Initialism of model-based testing.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "MBD"?
"MBD" is spelled M-B-D.
What does "MBD" mean?
As a noun, "MBD" means: Initialism of mother's brother's daughter.
What language does "MBD" come from?
"MBD" 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.

Using “MBD”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is M-B-D - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list