whistle-blower

noun

"whistle-blower" is a 13-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
14
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - One who reports a problem or violation to the authorities; especially, an employee or former employee who reports a violation by an employer.

Corpus desk

Index EN-whistle-blower · whistle-blower · English

whistle-blower · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 14 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "W" 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 whistle-blower
PropertyValue
Headwordwhistle-blower
LanguageEnglish
Part of speechNoun
Letters14
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “whistle-blower” in English

whistle-blowerfalls 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

whistle-blower is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "One who reports a problem or violation to the authorities; especially, an employee or former employee who reports a violation by an employer.".

The misspelling generator found no plausible variants for whistle-blower, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From whistle + blower, referring to a police officer blowing their whistle on observing a violation of the law. The correct English form is whistle-blower, spelled W-H-I-S-T-L-E---B-L-O-W-E-R.

Definition

  1. 1
    One who reports a problem or violation to the authorities; especially, an employee or former employee who reports a violation by an employer.

Recorded use

Wiktionary examples

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

  1. We owe it to a small group of brave whistle-blowers that we know about the infractions at all.
  2. As my study proceeded, I began to see that an investigation of organizational morality should also explore managerial dissenters, so-called whistleblowers, many of whom take stands against their organizations on grounds that they define as moral.

Etymology

From whistle + blower, referring to a police officer blowing their whistle on observing a violation of the law.

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 "whistle-blower"?
"whistle-blower" is spelled W-H-I-S-T-L-E---B-L-O-W-E-R.
What does "whistle-blower" mean?
As a noun, "whistle-blower" means: One who reports a problem or violation to the authorities; especially, an employee or former employee who reports a violation by an employer.
What is the origin of the word "whistle-blower"?
From whistle + blower, referring to a police officer blowing their whistle on observing a violation of the law. 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