undercarriage

/ˈʌndɚˌkɛɹɪd͡ʒ/

//ˈʌndɚˌkɛɹɪd͡ʒ// noun

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

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

The verdict

“undercarriage” is uncommon English (frequency #50,873 among 23,789 “U” headwords), classed as a noun. The kind of spelling people second-guess.

#50,873
frequency rank, English
23,789
“U” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The supporting structural framework of a vehicle.

Key facts for undercarriage
PropertyValue
Headwordundercarriage
LanguageEnglish
Part of speechNoun
IPA/ˈʌndɚˌkɛɹɪd͡ʒ/
Letters13
Frequency rank#50,873
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “undercarriage” 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). undercarriage 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

undercarriage is uncommon English at frequency #50,873 among 23,789 “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.

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.

Using “undercarriage”

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

  • The one correct English spelling is U-N-D-E-R-C-A-R-R-I-A-G-E - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈʌndɚˌkɛɹɪd͡ʒ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • 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 FrequencyWords open word-frequency list