Which to use
“impeccable” and “implacable” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #20,960
- “impeccable” frequency rank
- #46,539
- “implacable” frequency rank
- 67499
- confusion score
Side-by-Side Comparison
| Feature | impeccable | implacable |
|---|---|---|
| Definition | Perfect, without faults, flaws or errors | Not able to be placated or appeased. |
Where the eye mixes impeccable and implacable
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.
Visual trap between impeccable and implacable
A purely visual mix-up. impeccable (/ɪmˈpɛkəbəl/) and implacable (/ɪmˈplækəb(ə)l/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 67499, derived from the frequency rank of both members and their visual similarity.
impeccable is recorded at frequency rank #20,960, classified as anadj, pronounced /ɪmˈpɛkəbəl/. implacable is at rank #46,539, tagged as anadj, pronounced /ɪmˈplækəb(ə)l/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 67499, this pair ranks #63,063 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of impeccable vs implacable
Shared letters: abceilmp. Private to "impeccable": -. Private to "implacable": -.
"impeccable" · 10 letters · shape VCCVCCVCCV · "implacable" · 10 letters · shape VCCCVCVCCV
Known mistypes of this pair
- impeccable ← imepccable · immpeccable · impcecable · impecable · impecacble · impeccabble · impeccabel · impeccablle
- implacable ← imlpacable · immplacable · impalcable · implaacble · implacabble · implacabel · implacablle · implacalbe
Frequently Asked Questions
Can "impeccable" and "implacable" be used interchangeably?
In ordinary English text, does "impeccable" or "implacable" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "impeccable" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "implacable" - compare definitions side by side with the headword page. Word entry
- This pair ranks #63,063 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "impeccable" and "implacable" also get mixed up with nearby pairs, the highest-scored neighbour is "impeccable vs impeccably". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #63,063 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.