throw one's cap over the windmill

verb

Detailed reference entry for the English word "throw-one-s-cap-over-the-windmill", 33-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Wiktionary, and usage frequency ranked against an open word-frequency list covering the top 100,000 English words. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "throw-one-s-cap-over-the-windmill" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "throw-one-s-cap-over-the-windmill" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

The verdict

“throw one's cap over the windmill” is outside the top-ranked English vocabulary, used as a verb - the kind of word writers most often double-check.

Unranked
below top-frequency English
33
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) — To act in a bizarre, eccentric or immoral manner.

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Key facts for throw one's cap over the windmill
PropertyValue
Headwordthrow one's cap over the windmill
LanguageEnglish
Part of speechVerb
Letters33
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “throw one's cap over the windmill” sits in English frequency

throw one's cap over the windmill 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 throw one's cap over the windmill is 33 letters long, classified as a verb. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "To act in a bizarre, eccentric or immoral manner.".

No misspelling variants are generated for throw one's cap over the windmill in our index, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: Probably a calque of French jeter son bonnet par-dessus les moulins . Widely reported as deriving from a passage in the novel Don Quixote in which the titular character throws his cap over a windmill that he has mistaken for a giant, as a challenge. However… Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is throw one's cap over the windmill, spelled T-H-R-O-W- -O-N-E-'-S- -C-A-P- -O-V-E-R- -T-H-E- -W-I-N-D-M-I-L-L, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    To act in a bizarre, eccentric or immoral manner.

Etymology

Probably a calque of French jeter son bonnet par-dessus les moulins . Widely reported as deriving from a passage in the novel Don Quixote in which the titular character throws his cap over a windmill that he has mistaken for a giant, as a challenge. However, no such passage exists in the book.

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.

Cite this page

Free to reuse with attribution (CC BY-SA). Copy the citation:

PlainSpell, “throw one's cap over the windmill, English word data” (May 6, 2026). Derived from Wiktionary (kaikki.org, CC BY-SA) and an open word-frequency list. https://plainspell.com/en/word/throw-one-s-cap-over-the-windmill

Frequently Asked Questions

How do you spell "throw one's cap over the windmill"?
"throw one's cap over the windmill" is spelled T-H-R-O-W- -O-N-E-'-S- -C-A-P- -O-V-E-R- -T-H-E- -W-I-N-D-M-I-L-L.
What does "throw one's cap over the windmill" mean?
As a verb, "throw one's cap over the windmill" means: To act in a bizarre, eccentric or immoral manner.
What is the origin of the word "throw one's cap over the windmill"?
Probably a calque of French jeter son bonnet par-dessus les moulins . Widely reported as deriving from a passage in the novel Don Quixote in which the titular character throws his cap over a windmill that he has mistaken for a giant, as a challeng... 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 “throw one's cap over the windmill”

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

  • The one correct English spelling is T-H-R-O-W- -O-N-E-'-S- -C-A-P- -O-V-E-R- -T-H-E- -W-I-N-D-M-I-L-L - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Nearby English words

Other entries that begin with the letter T in our English index:

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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