superhighway

noun

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

"superhighway" is a 12-letter English headword indexed on PlainSpell.

The verdict

“superhighway” is uncommon English (frequency #63,288 among 54,294 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#63,288
frequency rank, English
54,294
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An expressway, especially one designed for high speeds.

Key facts for superhighway
PropertyValue
Headwordsuperhighway
LanguageEnglish
Part of speechNoun
Letters12
Frequency rank#63,288
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “superhighway” 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). superhighway 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

superhighway is uncommon English at frequency #63,288 among 54,294 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. 3 senses are on record.

Zero misspellings are on record for superhighway in our index, since its letter sequence doesn't invite the usual edit-distance slips. Our dataset records no confusable match here, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From super- + highway. The correct English form is superhighway, spelled S-U-P-E-R-H-I-G-H-W-A-Y.

Definition

  1. 1
    An expressway, especially one designed for high speeds.
  2. 2
    A major route that carries most of the traffic going in a given direction by a specified mode of transportation.
  3. 3
    The primary mechanism used in the movement of electronic data or information; information superhighway.

Etymology

From super- + highway.

This word in other languages

Autobahn(Deutsch)

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 "superhighway"?
"superhighway" is spelled S-U-P-E-R-H-I-G-H-W-A-Y.
What does "superhighway" mean?
As a noun, "superhighway" means: An expressway, especially one designed for high speeds.
What is the origin of the word "superhighway"?
From super- + highway. 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 “superhighway”

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

  • The one correct English spelling is S-U-P-E-R-H-I-G-H-W-A-Y - every other letter order is a misspelling in standard orthography.
  • 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