FidovsfistWhich spelling fits?

Quick tell: Fido is a name, fist is a noun, so they fill different roles in a sentence.

Which to use

“Fido” is a name and “fist” is a noun - they look or sound alike but fill different roles in a sentence.

#44,781
“Fido” frequency rank
#8,423
“fist” frequency rank
53204
confusion score

Side-by-Side Comparison

Feature Fido fist
Definition A stereotypical given name for a dog. A hand with the fingers clenched or curled inward.

Where the eye mixes Fido and fist

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. Fido (CVCV) and fist (CVCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

4 ch
Fido
4 ch
fist

Look-alike desk: Fido vs fist

These two trip readers on the page rather than in the ear: Fido is /ˈfaɪ.dəʊ/ while fist is /fɪst/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 53204, derived from the frequency rank of both members and their visual similarity.

Fido is recorded at frequency rank #44,781, classified as aname, pronounced /ˈfaɪ.dəʊ/. fist is at rank #8,423, tagged as anoun, pronounced /fɪst/.

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 53204, this pair ranks #150,917 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Fido vs fist

Shared letters: fi. Private to "Fido": do. Private to "fist": st.

"Fido" · 4 letters · shape CVCV  ·  "fist" · 4 letters · shape CVCC

Known mistypes of this pair

  • Fido ← fdio · ffido · fiddo · fiod · ifdo
  • fist ← ffist · fisst · fistt · fsit · ifst

Frequently Asked Questions

Is swapping "Fido" for "fist" ever safe?
No - they are not even the same part of speech. "Fido" is a name and "fist" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "Fido" or "fist"?
"fist" is the more common of the two: it sits at frequency rank #8,423 in our English list, against #44,781 for "Fido". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "Fido" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fist" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #150,917 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Fido" and "fist" also get mixed up with nearby pairs, the highest-scored neighbour is "Fido vs FOMO". 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 #150,917 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list