sleeping partner

noun

"sleeping-partner" is a 15-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
16
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A business partner who doesn't play an active role in running the day-to-day operations of a business, who instead, finances the business in the form of capital investment.

Corpus desk

Index EN-sleeping-partner · sleeping partner · English

sleeping partner · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 16 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "S" 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 sleeping partner
PropertyValue
Headwordsleeping partner
LanguageEnglish
Part of speechNoun
Letters16
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “sleeping partner” in English

sleeping partnersits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

sleeping partner is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A business partner who doesn't play an active role in running the day-to-day operations of a business, who instead, finances the business in the form of capital investment.".

sleeping partner has no tracked misspelling variants, since its letter pattern doesn't lend itself to common typo substitutions. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

No explicit etymology string is stored for this entry, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is sleeping partner, spelled S-L-E-E-P-I-N-G- -P-A-R-T-N-E-R.

Definition

  1. 1
    A business partner who doesn't play an active role in running the day-to-day operations of a business, who instead, finances the business in the form of capital investment.

Recorded use

Wiktionary example

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

  1. Somewhat later, the Frenchman Charles Fourier was ridiculed for expecting day by day the sleeping-partner to turn up who would invest in his Phalanstère plan, which was based on ideas very similar to those sponsored by one of the greatest contemporary experts on finance.

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 "sleeping partner"?
"sleeping partner" is spelled S-L-E-E-P-I-N-G- -P-A-R-T-N-E-R.
What does "sleeping partner" mean?
As a noun, "sleeping partner" means: A business partner who doesn't play an active role in running the day-to-day operations of a business, who instead, finances the business in the form of capital investment.
What language does "sleeping partner" come from?
"sleeping partner" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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