foiledvsformedWhat's the difference?

Which to use

“foiled” and “formed” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#29,659
“foiled” frequency rank
#2,112
“formed” frequency rank
31771
confusion score

Side-by-Side Comparison

Feature foiled formed
Definition simple past and past participle of foil simple past and past participle of form

Where the eye mixes foiled and formed

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
foiled
6 ch
formed

Look-alike desk: foiled vs formed

A purely visual mix-up. foiled (/fɔɪld/) and formed (/fɔːmd/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 31771, derived from the frequency rank of both members and their visual similarity.

foiled is recorded at frequency rank #29,659, classified as averb, pronounced /fɔɪld/. formed is at rank #2,112, tagged as averb, pronounced /fɔːmd/.

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 31771, this pair ranks #343,371 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of foiled vs formed

Shared letters: defo. Private to "foiled": il. Private to "formed": mr.

"foiled" · 6 letters · shape CVVCVC  ·  "formed" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • foiledffoiled · fioled · foield · foilde · foiledd · foilled · folied · ofiled
  • formedfformed · fomred · foremd · formde · formedd · formmed · forrmed · fromed

Frequently Asked Questions

Can "foiled" and "formed" be used interchangeably?
No. They are said differently (/fɔɪld/ versus /fɔːmd/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "foiled" or "formed"?
"formed" is the more common of the two: it sits at frequency rank #2,112 in our English list, against #29,659 for "foiled". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "foiled" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "formed" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #343,371 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "foiled" and "formed" also get mixed up with nearby pairs, the highest-scored neighbour is "foiled vs Foyle". 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 #343,371 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