fishervsfosterWhich spelling fits?

Quick tell: fisher is a noun, foster is a verb, so they fill different roles in a sentence.

Which to use

“fisher” is a noun and “foster” is a verb - they look or sound alike but fill different roles in a sentence.

#15,145
“fisher” frequency rank
#17,141
“foster” frequency rank
32286
confusion score

Side-by-Side Comparison

Feature fisher foster
Definition Pêcheur, pêcheuse (par profession ou pour le loisir). Alimenter, nourrir.

Where the eye mixes fisher and foster

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. fisher and foster follow the identical consonant-vowel pattern (CVCCVC). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
fisher
6 ch
foster

Why the eye confuses fisher with foster

These two trip readers on the page rather than in the ear: fisher is \ˈfɪʃ.ɚ\ while foster is \ˈfɒs.tə\. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 32286, derived from the frequency rank of both members and their visual similarity.

fisher is recorded at frequency rank #15,145, classified as anoun, pronounced \ˈfɪʃ.ɚ\. foster is at rank #17,141, tagged as averb, pronounced \ˈfɒs.tə\.

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 32286, this pair ranks #298,236 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fisher vs foster

Shared letters: efrs. Private to "fisher": hi. Private to "foster": ot.

"fisher" · 6 letters · shape CVCCVC  ·  "foster" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • fisher ← ffisher · fihser · fisehr · fisherr · fishher · fishre · fissher · fsiher
  • foster ← ffoster · fosetr · fosster · fosterr · fostre · fostter · fotser · fsoter

Frequently Asked Questions

Can "fisher" and "foster" be used interchangeably?
No - they are not even the same part of speech. "fisher" is a noun and "foster" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fisher" or "foster"?
"fisher" is the more common of the two: it sits at frequency rank #15,145 in our French list, against #17,141 for "foster". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "fisher" and "foster" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "fisher" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "foster" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #298,236 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fisher" and "foster" also get mixed up with nearby pairs, the highest-scored neighbour is "Finger vs fisher". 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 #298,236 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list