grand duke

noun

"grand-duke" is a 9-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Ruler or monarch of a grand duchy.

Corpus desk

Index EN-grand-duke · grand duke · English

grand duke · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "G" 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 grand duke
PropertyValue
Headwordgrand duke
LanguageEnglish
Part of speechNoun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “grand duke” in English

grand dukeranks 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

grand duke is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

grand duke has no tracked misspelling variants, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From grand + duke, after Middle French and French grand duc /grand-duc, itself after titles in other languages, especially Italian granduca, German Großherzog, and Russian вели́кий князь (velíkij knjazʹ). Doublet of grand-duc. The correct English form is grand duke, spelled G-R-A-N-D- -D-U-K-E.

Definition

  1. 1
    Ruler or monarch of a grand duchy.
  2. 2
    Son, daughter, or grandchild of a czar (emperor) of the Russian Empire. (A more literal translation of the Russian is grand prince.)

Etymology

From grand + duke, after Middle French and French grand duc /grand-duc, itself after titles in other languages, especially Italian granduca, German Großherzog, and Russian вели́кий князь (velíkij knjazʹ). Doublet of grand-duc.

This word in other languages

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 "grand duke"?
"grand duke" is spelled G-R-A-N-D- -D-U-K-E.
What does "grand duke" mean?
As a noun, "grand duke" means: Ruler or monarch of a grand duchy.
What is the origin of the word "grand duke"?
From grand + duke, after Middle French and French grand duc /grand-duc, itself after titles in other languages, especially Italian granduca, German Großherzog, and Russian вели́кий князь (velíkij knjazʹ). Doublet of grand-duc. See the full etymology section above for more details.
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