Which to use
“fiercely” is an adverb and “fiercest” is an adjective - they look or sound alike but fill different roles in a sentence.
- #18,310
- “fiercely” frequency rank
- #34,055
- “fiercest” frequency rank
- 52365
- confusion score
Side-by-Side Comparison
| Feature | fiercely | fiercest |
|---|---|---|
| Definition | In a fierce manner. | superlative form of fierce: most fierce. |
Letter map: fiercely vs fiercest
Shared letters muted; letters that set fiercely and fiercest apart highlighted. Shared run: 6. fiercely (CVVCCVCV) and fiercest (CVVCCVCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Role in the sentence - fiercely and fiercest
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: fiercely is anadverb and fiercestanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 52365, derived from the frequency rank of both members and their visual similarity.
fiercely is recorded at frequency rank #18,310, classified as anadv, pronounced /ˈfɪɹsli/. fiercest is at rank #34,055, tagged as anadj.
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 52365, this pair ranks #157,666 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of fiercely vs fiercest
Shared letters: cefir. Private to "fiercely": ly. Private to "fiercest": st.
"fiercely" · 8 letters · shape CVVCCVCV · "fiercest" · 8 letters · shape CVVCCVCC
Known mistypes of this pair
Frequently Asked Questions
Can "fiercely" and "fiercest" be used interchangeably?
Frequency check: "fiercely" vs "fiercest" - which ranks higher?
After this comparison
Done with this confusable. These links stay specific to "fiercely" and "fiercest".
- Full dictionary entry for "fiercely" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fiercest" - compare definitions side by side with the headword page. Word entry
- This pair ranks #157,666 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "fiercely" and "fiercest" also get mixed up with nearby pairs, the highest-scored neighbour is "fierce vs fiercest". 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 #157,666 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.