red light

noun

"red-light" is a 8-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A warning light, especially as a traffic signal indicating stop.

Corpus desk

Index EN-red-light · red light · English

red light · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "R" 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 red light
PropertyValue
Headwordred light
LanguageEnglish
Part of speechNoun
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “red light” in English

red lightfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

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

Rare enough to double-check

red light is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 3 senses are on record.

We couldn't generate a plausible misspelling set for red light, which points to an orthography that plays by predictable English rules. Our dataset records no confusable match here, since nothing in our dataset looks or sounds close enough to cause mix-ups.

This entry carries no recorded etymology, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct English form is red light, spelled R-E-D- -L-I-G-H-T.

Definition

  1. 1
    A warning light, especially as a traffic signal indicating stop.
  2. 2
    A sign of a brothel.
  3. 3
    A denial to proceed a ruling out of any possibility.

Recorded use

Wiktionary examples

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

  1. We ran three red lights on the way to the hospital.
  2. Paddington [the GWR HQ] saw the red light, however, and the extension to Nantgarw was withdrawn on the G.W.R. agreeing "to lay down the narrow gauge [actually standard gauge as compared to broad gauge] from Didcot over the whole of their system in South Wales."

Synonyms

stoplightstop light

This word in other languages

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 "red light"?
"red light" is spelled R-E-D- -L-I-G-H-T.
What does "red light" mean?
As a noun, "red light" means: A warning light, especially as a traffic signal indicating stop.
What language does "red light" come from?
"red light" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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