Which to use
“strenuous” is an adjective and “strenuously” is an adverb - they look or sound alike but fill different roles in a sentence.
- #24,920
- “strenuous” frequency rank
- #43,397
- “strenuously” frequency rank
- 68317
- confusion score
Side-by-Side Comparison
| Feature | strenuous | strenuously |
|---|---|---|
| Definition | Having great vigour or energy; forceful. | In a strenuous manner. |
Letter map: strenuous vs strenuously
Shared letters muted; letters that set strenuous and strenuously apart highlighted. Shared run: 9. strenuous runs 9 letters (CCCVCVVVC) against strenuously's 11 (CCCVCVVVCCV) - the length gap alone is often enough to separate them once you know to check it.
Part-of-speech tell for strenuous / strenuously
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: strenuous is anadjective and strenuouslyanadverb. On the page they differ by 2 extra letter(s) - “strenuous” sits inside “strenuously”. Our composite confusion score for this pair is 68317, derived from the frequency rank of both members and their visual similarity.
strenuous is recorded at frequency rank #24,920, classified as anadj, pronounced /ˈstɹɛ.nju.əs/. strenuously is at rank #43,397, tagged as anadv.
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 68317, this pair ranks #59,405 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of strenuous vs strenuously
Shared letters: enorstu. Private to "strenuous": -. Private to "strenuously": ly.
"strenuous" · 9 letters · shape CCCVCVVVC · "strenuously" · 11 letters · shape CCCVCVVVCCV
Known mistypes of this pair
- strenuous ← srtenuous · sstrenuous · sternuous · strennuous · strenouus · strenuosu · strenuouss · strenuuos
- strenuously ← srtenuously · sstrenuously · sternuously · strennuously · strenouusly · strenuosuly · strenuoulsy · strenuouslly
Frequently Asked Questions
Can "strenuous" and "strenuously" be used interchangeably?
Which is more common, "strenuous" or "strenuously"?
After this comparison
You've compared "strenuous" and "strenuously". Here's where to go from here.
- Full dictionary entry for "strenuous" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "strenuously" - compare definitions side by side with the headword page. Word entry
- This pair ranks #59,405 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- 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 #59,405 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.