sagacious
/səˈɡeɪʃəs/
"sagacious" is a 9-letter English headword indexed on PlainSpell.
The verdict
“sagacious” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Having or showing keen discernment, sound judgment, and farsightedness; mentally shrewd.
Corpus desk
Index EN-sagacious · sagacious · English
sagacious · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "S" 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.
| Property | Value |
|---|---|
| Headword | sagacious |
| Language | English |
| Part of speech | Adjective |
| IPA | /səˈɡeɪʃəs/ |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “sagacious” sits in English frequency
Rare enough to double-check
sagacious is uncommon English outside the top frequency list, classed as anadjective, transcribed /səˈɡeɪʃəs/. Rarity is why readers land here mid-draft. Gloss: "Having or showing keen discernment, sound judgment, and farsightedness; mentally shrewd.".
Our edit-distance generator produced no likely misspellings for sagacious, a sign its spelling follows regular English conventions. No confusable counterpart is on file for this word, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: Coined between 1600 and 1610. Borrowed from Latin sagāx, + -ious. The correct English form is sagacious, spelled S-A-G-A-C-I-O-U-S.
Definition
- 1Having or showing keen discernment, sound judgment, and farsightedness; mentally shrewd.
Recorded use
Wiktionary exampleThese source excerpts show how sagacious appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
I resort, once again, to a sagacious adage from Justice Scalia […]
Etymology
Coined between 1600 and 1610. Borrowed from Latin sagāx, + -ious.
Synonyms
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
How do you spell "sagacious"?
What does "sagacious" mean?
How do you pronounce "sagacious"?
What is the origin of the word "sagacious"?
Is PlainSpell free to use?
What to do next
You've looked up "sagacious". Here's where to go from here.
- Browse more English words in the "S" letter cohort. S–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
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.