Indian summer

/ˈɪn.dɪ.ən ˈsʌ.mə(ɹ)/

//ˈɪn.dɪ.ən ˈsʌ.mə(ɹ)// noun

"indian-summer" is a 12-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
13
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A stretch of sunny and warm, often hazy, days during late autumn.

Corpus desk

Index EN-indian-summer · Indian summer · English

Indian summer · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 13 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "I" 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 Indian summer
PropertyValue
HeadwordIndian summer
LanguageEnglish
Part of speechNoun
IPA/ˈɪn.dɪ.ən ˈsʌ.mə(ɹ)/
Letters13
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “Indian summer” in English

Indian summerfalls 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

Indian summer is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈɪn.dɪ.ən ˈsʌ.mə(ɹ)/. Rarity is why readers land here mid-draft. 3 senses are on record.

Indian summer has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. It is not paired with a close-neighbour confusable in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: Of North American origin, exact etymology uncertain. The most plausible suggestions are that Native Americans (or American Indians) called it a form of “summer” due to harvesting late plants or preparing for winter, or that European settlers coined it due t… The correct English form is Indian summer, spelled I-N-D-I-A-N- -S-U-M-M-E-R.

Definition

  1. 1
    A stretch of sunny and warm, often hazy, days during late autumn.
  2. 2
    The late autumn of life; a late flowering of activity before old age.
  3. 3
    Used other than figuratively or idiomatically: see Indian, summer.

Recorded use

Wiktionary examples

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

  1. Then a severe frost succeeds which prepares it to receive the voluminous coat of snow which is soon to follow; though it is often preceded by a short interval of smoke and mildness, called the Indian Summer.
  2. And while the bards, before my fancy bring / The Indian ſummer, and Italian ſpring, / Rapt let me mark the different climates found, / In Temple's gardens, and his lawns around.

Etymology

Of North American origin, exact etymology uncertain. The most plausible suggestions are that Native Americans (or American Indians) called it a form of “summer” due to harvesting late plants or preparing for winter, or that European settlers coined it due to various Native American activities in this season, or due to the weather phenomenon being associated with regions inhabited by Native Americans. Alternatively, the use of the word Indian may indicate something deviating from the norm: compare terms like Indian bread, Indian corn.

Synonyms

St. Luke's summerall-hallown summerSt. Martin's summerMichaelmas summer

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 "Indian summer"?
"Indian summer" is spelled I-N-D-I-A-N- -S-U-M-M-E-R. The IPA pronunciation is /ˈɪn.dɪ.ən ˈsʌ.mə(ɹ)/.
What does "Indian summer" mean?
As a noun, "Indian summer" means: A stretch of sunny and warm, often hazy, days during late autumn.
How do you pronounce "Indian summer"?
The IPA (International Phonetic Alphabet) transcription for "Indian summer" is /ˈɪn.dɪ.ən ˈsʌ.mə(ɹ)/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "Indian summer"?
Of North American origin, exact etymology uncertain. The most plausible suggestions are that Native Americans (or American Indians) called it a form of “summer” due to harvesting late plants or preparing for winter, or that European settlers coine... 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