subchapter

noun

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

"subchapter" is a 10-letter English headword indexed on PlainSpell.

The verdict

“subchapter” is uncommon English (frequency #69,472 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#69,472
frequency rank, English
6,566
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A subsection of a chapter.

Corpus desk

Index EN-subchapter · subchapter · English

subchapter · rank #69,472 · 0 variants · 0 confusables

  • FREQ-RARE #69,472
  • LEN-MEGA 10 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH subdivide

Nearest frequency peer: subdivide (+1 rank slots)

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.

Long-tail ranks near “subchapter”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “subchapter” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for subchapter
PropertyValue
Headwordsubchapter
LanguageEnglish
Part of speechNoun
Letters10
Frequency rank#69,472
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “subchapter” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).subchapterfalls in this rarity band:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “subdivide” (#69,473), “suborbital” (#69,474), “straightener” (#69,469). Among 6,566 “S” headwords, “subchapter” is #69,472. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

subchapter is uncommon English at frequency #69,472 among 6,566 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A subsection of a chapter.".

Zero misspellings are on record for subchapter in our index, since its letter sequence doesn't invite the usual edit-distance slips. This headword has no recorded confusable partner, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From sub- + chapter. The correct English form is subchapter, spelled S-U-B-C-H-A-P-T-E-R.

Definition

  1. 1
    A subsection of a chapter.

Etymology

From sub- + chapter.

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 "subchapter"?
"subchapter" is spelled S-U-B-C-H-A-P-T-E-R.
What does "subchapter" mean?
As a noun, "subchapter" means: A subsection of a chapter.
What is the origin of the word "subchapter"?
From sub- + chapter. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "subchapter", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

suborbital#69,474Stansfield#69,462semicircle#69,436seamanship#69,433

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

Source: FrequencyWords open word-frequency list