rat out

verb

"rat-out" is a 6-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
7
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To inform authorities (about someone); to tell on (somebody).

Corpus desk

Index EN-rat-out · rat out · English

rat out · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 7 letters
  • VOW-3 3 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 rat out
PropertyValue
Headwordrat out
LanguageEnglish
Part of speechVerb
Letters7
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “rat out” in English

rat outsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

rat out is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. Gloss: "To inform authorities (about someone); to tell on (somebody).".

No generated misspelling entries exist for rat out in our index, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

This headword's origin isn't recorded in our source data, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is rat out, spelled R-A-T- -O-U-T.

Definition

  1. 1
    To inform authorities (about someone); to tell on (somebody).

Recorded use

Wiktionary example

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

  1. Don't you dare rat me out or I'll kill you!

Synonyms

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 "rat out"?
"rat out" is spelled R-A-T- -O-U-T.
What does "rat out" mean?
As a verb, "rat out" means: To inform authorities (about someone); to tell on (somebody).
What language does "rat out" come from?
"rat out" 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