dead man's switch

noun

"dead-man-s-switch" is a 14-letter English headword indexed on PlainSpell.

The verdict

“dead man's switch” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
17
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A switch that ensures a fail-safe condition by automatically triggering an action (for instance, to stop a machine or vehicle) if a specified input from the operator is not made or is altered.

Corpus desk

Index EN-dead-man-s-switch · dead man's switch · English

dead man's switch · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 17 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "D" 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 dead man's switch
PropertyValue
Headworddead man's switch
LanguageEnglish
Part of speechNoun
Letters17
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “dead man's switch” in English

dead man's switchranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

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

Rare enough to double-check

dead man's switch is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A switch that ensures a fail-safe condition by automatically triggering an action (for instance, to stop a machine or vehicle) if a specified input from the operator is not made or is altered.".

Zero misspellings are on record for dead man's switch in our index, suggesting the orthography follows predictable English patterns. No confusable counterpart is on file for this word, since no other headword is close enough in sound or shape to pair with it.

Wiktionary doesn't record an etymology for this headword, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is dead man's switch, spelled D-E-A-D- -M-A-N-'-S- -S-W-I-T-C-H.

Definition

  1. 1
    A switch that ensures a fail-safe condition by automatically triggering an action (for instance, to stop a machine or vehicle) if a specified input from the operator is not made or is altered.

Recorded use

Wiktionary examples

These source excerpts show how dead man's switch appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Holonyms: device, machine
  2. This seat is equipped with a dead man's switch. As the theory goes, "if the driver stops sitting, the machine is quitting."

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 "dead man's switch"?
"dead man's switch" is spelled D-E-A-D- -M-A-N-'-S- -S-W-I-T-C-H.
What does "dead man's switch" mean?
As a noun, "dead man's switch" means: A switch that ensures a fail-safe condition by automatically triggering an action (for instance, to stop a machine or vehicle) if a specified input from the operator is not made or is altered.
What language does "dead man's switch" come from?
"dead man's switch" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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