Which to use
“infernal” and “internal” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #28,956
- “infernal” frequency rank
- #2,209
- “internal” frequency rank
- 31165
- confusion score
Side-by-Side Comparison
| Feature | infernal | internal |
|---|---|---|
| Definition | Of or relating to hell, or the world of the dead; hellish. | Of or situated on the inside. |
Where the eye mixes infernal and internal
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.
Why the eye confuses infernal with internal
A purely visual mix-up. infernal (/ɪnˈfɜː(ɹ)nəl/) and internal (/ɪnˈtɜː.nəl/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by a single letter - f in “infernal” becomes t in “internal”. Our composite confusion score for this pair is 31165, derived from the frequency rank of both members and their visual similarity.
infernal is recorded at frequency rank #28,956, classified as anadj, pronounced /ɪnˈfɜː(ɹ)nəl/. internal is at rank #2,209, tagged as anadj, pronounced /ɪnˈtɜː.nəl/.
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 31165, this pair ranks #348,451 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of infernal vs internal
Shared letters: aeilnr. Private to "infernal": f. Private to "internal": t.
"infernal" · 8 letters · shape VCCVCCVC · "internal" · 8 letters · shape VCCVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "infernal" and "internal" be used interchangeably?
Which is more common, "infernal" or "internal"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "infernal" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "internal" - compare definitions side by side with the headword page. Word entry
- This pair ranks #348,451 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "infernal" and "internal" also get mixed up with nearby pairs, the highest-scored neighbour is "infernal vs inferno". 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 #348,451 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.