Which to use
“infra” is an adverb and “inna” is a contraction - they look or sound alike but fill different roles in a sentence.
- #32,864
- “infra” frequency rank
- #47,692
- “inna” frequency rank
- 80556
- confusion score
Side-by-Side Comparison
| Feature | infra | inna |
|---|---|---|
| Definition | Discussed later. | In the. |
Where the spellings diverge
Shared letters are muted; the letters that actually set infra and inna apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: infra is anadverb and innaacontraction. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 80556, derived from the frequency rank of both members and their visual similarity.
infra is recorded at frequency rank #32,864, classified as anadv, pronounced /ˈɪn.fɹə/. inna is at rank #47,692, tagged as acontraction.
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 80556, this pair ranks #19,553 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of infra vs inna
Shared letters: ain. Private to "infra": fr. Private to "inna": -.
"infra" · 5 letters · shape VCCCV · "inna" · 4 letters · shape VCCV
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "infra" and "inna" be used interchangeably?
Which is more common, "infra" or "inna"?
Remembering infra vs inna
The fastest way to pick the right one every time.
- Check the role first: if you need an adverb, it's “infra”; for a contraction, it's “inna”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “infra” entry
- Browse more pairs most likely to be confused. Most confusable