Which to use
“infinitely” is an adverb and “infinity” is a noun - they look or sound alike but fill different roles in a sentence.
- #14,771
- “infinitely” frequency rank
- #9,350
- “infinity” frequency rank
- 24121
- confusion score
Side-by-Side Comparison
| Feature | infinitely | infinity |
|---|---|---|
| Definition | In an infinite manner; as of anything growing without bounds; endlessly. | endlessness, unlimitedness, absence of a beginning, end or limits to size. |
Where the eye mixes infinitely and infinity
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.
Look-alike desk: infinitely vs infinity
These two trip readers on the page rather than in the ear: infinitely is /ˈɪnfɪnɪtli/ while infinity is /ɪnˈfɪnɪti/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 24121, derived from the frequency rank of both members and their visual similarity.
infinitely is recorded at frequency rank #14,771, classified as anadv, pronounced /ˈɪnfɪnɪtli/. infinity is at rank #9,350, tagged as anoun, pronounced /ɪnˈfɪnɪti/.
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 24121, this pair ranks #404,290 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of infinitely vs infinity
Shared letters: finty. Private to "infinitely": el. Private to "infinity": -.
"infinitely" · 10 letters · shape VCCVCVCVCV · "infinity" · 8 letters · shape VCCVCVCV
Known mistypes of this pair
- infinitely ← ifninitely · inffinitely · infiintely · infinietly · infinitelly · infinitelyy · infiniteyl · infinitley
- infinity ← ifninity · inffinity · infiinty · infinitty · infinityy · infiniyt · infinnity · infintiy
Frequently Asked Questions
Is swapping "infinitely" for "infinity" ever safe?
In ordinary English text, does "infinitely" or "infinity" show up more?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "infinitely" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "infinity" - compare definitions side by side with the headword page. Word entry
- This pair ranks #404,290 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "infinitely" and "infinity" also get mixed up with nearby pairs, the highest-scored neighbour is "indignity vs infinity". 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 #404,290 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.