rare bird

noun

"rare-bird" is a 8-letter English headword indexed on PlainSpell.

The verdict

“rare bird” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An unusual or exceptional person or thing.

Key facts for rare bird
PropertyValue
Headwordrare bird
LanguageEnglish
Part of speechNoun
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “rare bird” sits in English frequency

rare bird 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.

Spelling & Dictionary Insight

The English entry for rare bird is 9 letters long, classified as a noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.

Our edit-distance generator produced no likely misspellings for rare bird, and the word's spelling is regular enough that our generator found nothing worth flagging. It is not paired with a close-neighbour confusable in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: Calque of Latin rāra avis, part of a commonly quoted line from Juvenal's Satire VI: rara avis in terris nigroque simillima cygno ("a bird as rare upon the earth as a black swan"). The correct English form is rare bird, spelled R-A-R-E- -B-I-R-D.

Definition

  1. 1
    An unusual or exceptional person or thing.
  2. 2
    Used other than figuratively or idiomatically: see rare, bird.

Etymology

Calque of Latin rāra avis, part of a commonly quoted line from Juvenal's Satire VI: rara avis in terris nigroque simillima cygno ("a bird as rare upon the earth as a black swan").

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 "rare bird"?
"rare bird" is spelled R-A-R-E- -B-I-R-D.
What does "rare bird" mean?
As a noun, "rare bird" means: An unusual or exceptional person or thing.
What is the origin of the word "rare bird"?
Calque of Latin rāra avis, part of a commonly quoted line from Juvenal's Satire VI: rara avis in terris nigroque simillima cygno ("a bird as rare upon the earth as a black swan"). 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.

Using “rare bird”

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

  • The one correct English spelling is R-A-R-E- -B-I-R-D - 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