Which to use
“stern” is an adjective and “sternly” is an adverb - they look or sound alike but fill different roles in a sentence.
- #8,356
- “stern” frequency rank
- #47,934
- “sternly” frequency rank
- 56290
- confusion score
Side-by-Side Comparison
| Feature | stern | sternly |
|---|---|---|
| Definition | Having a hardness and severity of nature or manner. | In a stern manner. |
Where the eye mixes stern and sternly
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. stern runs 5 letters (CCVCC) against sternly's 7 (CCVCCCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses stern with sternly
These two trip readers on the page rather than in the ear: stern is /stɜːn/ while sternly is /ˈstɝnli/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “stern” sits inside “sternly”, and the parts of speech differ too (adjective vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 56290, derived from the frequency rank of both members and their visual similarity.
stern is recorded at frequency rank #8,356, classified as anadj, pronounced /stɜːn/. sternly is at rank #47,934, tagged as anadv, pronounced /ˈstɝnli/.
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 56290, this pair ranks #127,337 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of stern vs sternly
Shared letters: enrst. Private to "stern": -. Private to "sternly": ly.
"stern" · 5 letters · shape CCVCC · "sternly" · 7 letters · shape CCVCCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "stern" for "sternly" ever safe?
In ordinary English text, does "stern" or "sternly" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "stern" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sternly" - compare definitions side by side with the headword page. Word entry
- This pair ranks #127,337 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "stern" and "sternly" also get mixed up with nearby pairs, the highest-scored neighbour is "starkly vs sternly". 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 #127,337 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.