warning sign

noun

"warning-sign" is a 11-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
12
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A sign that indicates a danger, for example to vehicles on a road or of hazardous chemicals.

Key facts for warning sign
PropertyValue
Headwordwarning sign
LanguageEnglish
Part of speechNoun
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “warning sign” sits in English frequency

warning sign falls 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

warning sign is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

warning sign has no tracked misspelling variants, a sign its spelling follows regular English conventions. This entry stands alone in our confusable dataset, since no other headword is close enough in sound or shape to pair with it.

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 warning sign, spelled W-A-R-N-I-N-G- -S-I-G-N.

Definition

  1. 1
    A sign that indicates a danger, for example to vehicles on a road or of hazardous chemicals.
  2. 2
    An indication that someone or something is in danger or at risk.

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 "warning sign"?
"warning sign" is spelled W-A-R-N-I-N-G- -S-I-G-N.
What does "warning sign" mean?
As a noun, "warning sign" means: A sign that indicates a danger, for example to vehicles on a road or of hazardous chemicals.
What language does "warning sign" come from?
"warning sign" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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 “warning sign”

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

  • The one correct English spelling is W-A-R-N-I-N-G- -S-I-G-N - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words
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