unfailing
"unfailing" is a 9-letter English headword indexed on PlainSpell.
The verdict
“unfailing” is uncommon English (frequency #52,696 among 1,433 “U” headwords), classed as an adjective. The kind of spelling people second-guess.
- #52,696
- frequency rank, English
- 1,433
- “U” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - inexhaustible
Corpus desk
Index EN-unfailing · unfailing · English
unfailing · rank #52,696 · 0 variants · 0 confusables
- FREQ-RARE #52,696
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,433
- PHOTO-FINISH uneasiness
Nearest frequency peer: uneasiness (-1 rank slots)
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.
Long-tail ranks near “unfailing”
Sparse band: bars invert rank so rarer forms read shorter
- unbuttoned
unbuttoned
47,309 corpus weight
- uneasiness
uneasiness
47,306 corpus weight
- unfailing
unfailing
47,305 corpus weight
- unfavorably
unfavorably
47,304 corpus weight
- unknowing
unknowing
47,302 corpus weight
- unnerved
unnerved
47,301 corpus weight
What this shows Long-tail view: where “unfailing” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | unfailing |
| Language | English |
| Part of speech | Adjective |
| Letters | 9 |
| Frequency rank | #52,696 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “unfailing” in English
Rare enough to double-check
unfailing is uncommon English at frequency #52,696 among 1,433 “U” headwords, classed as anadjective. Rarity is why readers land here mid-draft. 3 senses are on record.
We couldn't generate a plausible misspelling set for unfailing, a sign its spelling follows regular English conventions. We don't track a confusable pairing for this entry, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From un- + failing. The correct English form is unfailing, spelled U-N-F-A-I-L-I-N-G.
Definition
- 1inexhaustible
- 2changeless, constant
- 3infallible
Recorded use
Wiktionary examplesThese source excerpts show how unfailing appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
There is an unfailing charm about his novels, an unwearing freshness.
It is a work of love, made in difficult times at complex locations, with the unfailing support of dozens of brilliant professional people.
Etymology
From un- + failing.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "unfailing", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).