idoneous

adj

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

The verdict

“idoneous” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - appropriate; suitable

Corpus desk

Index EN-idoneous · idoneous · English

idoneous · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 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 idoneous
PropertyValue
Headwordidoneous
LanguageEnglish
Part of speechAdjective
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “idoneous” in English

idoneousranks 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

idoneous is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "appropriate; suitable".

No generated misspelling entries exist for idoneous in our index, a sign its spelling follows regular English conventions. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From Latin idōneus. The correct English form is idoneous, spelled I-D-O-N-E-O-U-S.

Definition

  1. 1
    appropriate; suitable

Recorded use

Wiktionary example

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

  1. Hobbes tries to follow an 'idoneous principle of tractation' in moral philosophy, by beginning with an account of human nature and human motives.

Etymology

From Latin idōneus.

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 "idoneous"?
"idoneous" is spelled I-D-O-N-E-O-U-S.
What does "idoneous" mean?
As an adjective, "idoneous" means: appropriate; suitable
What is the origin of the word "idoneous"?
From Latin idōneus. 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