fortitudinous

adj

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

The verdict

“fortitudinous” is uncommon English (outside the top frequency list), classed as an adjective. 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) - Having fortitude; courageous.

Corpus desk

Index EN-fortitudinous · fortitudinous · English

fortitudinous · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 13 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "F" 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 fortitudinous
PropertyValue
Headwordfortitudinous
LanguageEnglish
Part of speechAdjective
Letters13
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “fortitudinous” in English

fortitudinousranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

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

Rare enough to double-check

fortitudinous is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Having fortitude; courageous.".

fortitudinous has no tracked misspelling variants, typically a sign the spelling maps closely to how the word sounds. Our dataset records no confusable match here, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From fortitude + -in- + -ous. The correct English form is fortitudinous, spelled F-O-R-T-I-T-U-D-I-N-O-U-S.

Definition

  1. 1
    Having fortitude; courageous.

Recorded use

Wiktionary examples

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

  1. these fortitudinous heroes are awed by the superior fierceness of the lions and tigers
  2. as brave and fortitudinous a man as any in the king's dominions

Etymology

From fortitude + -in- + -ous.

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 "fortitudinous"?
"fortitudinous" is spelled F-O-R-T-I-T-U-D-I-N-O-U-S.
What does "fortitudinous" mean?
As an adjective, "fortitudinous" means: Having fortitude; courageous.
What is the origin of the word "fortitudinous"?
From fortitude + -in- + -ous. 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