Which to use
“FISA” is a name and “fishy” is an adjective - they look or sound alike but fill different roles in a sentence.
- #32,399
- “FISA” frequency rank
- #20,116
- “fishy” frequency rank
- 52515
- confusion score
Side-by-Side Comparison
| Feature | FISA | fishy |
|---|---|---|
| Definition | Acronym of Foreign Intelligence Surveillance Act. | Of, from, or similar to fish. |
Letter map: FISA vs fishy
Shared letters muted; letters that set FISA and fishy apart highlighted. Shared run: 3. FISA runs 4 letters (CVCV) against fishy's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - FISA and fishy
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: FISA is aname and fishyanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 52515, derived from the frequency rank of both members and their visual similarity.
FISA is recorded at frequency rank #32,399, classified as aname. fishy is at rank #20,116, tagged as anadj, pronounced /ˈfɪʃi/.
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 52515, this pair ranks #156,393 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of FISA vs fishy
Shared letters: fis. Private to "FISA": a. Private to "fishy": hy.
"FISA" · 4 letters · shape CVCV · "fishy" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "FISA" for "fishy" ever safe?
Frequency check: "FISA" vs "fishy" - which ranks higher?
After this comparison
Done with this confusable. These links stay specific to "FISA" and "fishy".
- Full dictionary entry for "FISA" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fishy" - compare definitions side by side with the headword page. Word entry
- This pair ranks #156,393 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "FISA" and "fishy" also get mixed up with nearby pairs, the highest-scored neighbour is "FISA vs fossa". 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 #156,393 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.