green light

noun

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

The verdict

“green 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
11
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A traffic light in its green state (indicating that vehicles may proceed).

Corpus desk

Index EN-green-light · green light · English

green light · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "G" 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 green light
PropertyValue
Headwordgreen light
LanguageEnglish
Part of speechNoun
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “green light” in English

green 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

green 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 green light, a sign its spelling follows regular English conventions. Our dataset records no confusable match here, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From the standard red-green color scheme used in traffic lights and railway signals. The correct English form is green light, spelled G-R-E-E-N- -L-I-G-H-T.

Definition

  1. 1
    A traffic light in its green state (indicating that vehicles may proceed).
  2. 2
    Approval, or permission to proceed.
  3. 3
    A go-ahead to commit a crime, specifically to carry out a hit on someone (i.e. to kill).

Recorded use

Wiktionary examples

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

  1. The drive home was much faster than usual; somehow we managed to hit every green light.
  2. We have a green light on the project. Work starts today.

Etymology

From the standard red-green color scheme used in traffic lights and railway signals.

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 "green light"?
"green light" is spelled G-R-E-E-N- -L-I-G-H-T.
What does "green light" mean?
As a noun, "green light" means: A traffic light in its green state (indicating that vehicles may proceed).
What is the origin of the word "green light"?
From the standard red-green color scheme used in traffic lights and railway signals. 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.

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

Source: FrequencyWords open word-frequency list