undercarriage

/ˈʌndɚˌkɛɹɪd͡ʒ/

//ˈʌndɚˌkɛɹɪd͡ʒ// noun

"undercarriage" is a 13-letter English headword indexed on PlainSpell.

The verdict

“undercarriage” is uncommon English (frequency #50,873 among 1,433 “U” headwords), classed as a noun. The kind of spelling people second-guess.

#50,873
frequency rank, English
1,433
“U” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The supporting structural framework of a vehicle.

Corpus desk

Index EN-undercarriage · undercarriage · English

undercarriage · rank #50,873 · 0 variants · 0 confusables

  • FREQ-RARE #50,873
  • LEN-MEGA 13 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 1,433
  • PHOTO-FINISH uncredited

Nearest frequency peer: uncredited (-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 “undercarriage”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for undercarriage
PropertyValue
Headwordundercarriage
LanguageEnglish
Part of speechNoun
IPA/ˈʌndɚˌkɛɹɪd͡ʒ/
Letters13
Frequency rank#50,873
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “undercarriage” 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).undercarriagefalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “uncredited” (#50,872), “unhindered” (#50,874), “unceremoniously” (#50,871). Among 1,433 “U” headwords, “undercarriage” is #50,873. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

undercarriage is uncommon English at frequency #50,873 among 1,433 “U” headwords, classed as anoun, transcribed /ˈʌndɚˌkɛɹɪd͡ʒ/. Rarity is why readers land here mid-draft. 3 senses are on record.

No generated misspelling entries exist for undercarriage in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From under- + carriage. The correct English form is undercarriage, spelled U-N-D-E-R-C-A-R-R-I-A-G-E.

Definition

  1. 1
    The supporting structural framework of a vehicle.
  2. 2
    The landing gear of an aircraft.
  3. 3
    The genitalia.

Recorded use

Wiktionary example

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

  1. The solution to coach riding defects, at least, seems to require much more co-operative practical experiment by all engineering departments to achieve better sympathy between the vehicle body, its undercarriage and the track on which it rides.

Etymology

From under- + carriage.

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 "undercarriage"?
"undercarriage" is spelled U-N-D-E-R-C-A-R-R-I-A-G-E. The IPA pronunciation is /ˈʌndɚˌkɛɹɪd͡ʒ/.
What does "undercarriage" mean?
As a noun, "undercarriage" means: The supporting structural framework of a vehicle.
How do you pronounce "undercarriage"?
The IPA (International Phonetic Alphabet) transcription for "undercarriage" is /ˈʌndɚˌkɛɹɪd͡ʒ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "undercarriage"?
From under- + carriage. 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 "undercarriage", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 13 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list