foolingvsfuelingWhich spelling fits?

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

Which to use

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

#19,339
“fooling” frequency rank
#23,838
“fueling” frequency rank
43177
confusion score

Side-by-Side Comparison

Feature fooling fueling
Definition present participle and gerund of fool The act or process by which something is fueled.

Letter map: fooling vs fueling

Shared letters muted; letters that set fooling and fueling apart highlighted. Shared run: 5.

7 ch
fooling
7 ch
fueling

Grammar separator: fooling vs fueling

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: fooling is averb and fuelinganoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 43177, derived from the frequency rank of both members and their visual similarity.

fooling is recorded at frequency rank #19,339, classified as averb, pronounced /ˈfuːlɪŋ/. fueling is at rank #23,838, tagged as anoun.

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 43177, this pair ranks #242,504 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fooling vs fueling

Shared letters: fgiln. Private to "fooling": o. Private to "fueling": eu.

"fooling" · 7 letters · shape CVVCVCC  ·  "fueling" · 7 letters · shape CVVCVCC

Known mistypes of this pair

  • foolingffooling · foling · foloing · fooilng · foolign · foolingg · foolinng · foolling
  • fuelingfeuling · ffueling · fueilng · fuelign · fuelingg · fuelinng · fuelnig · fuleing

Frequently Asked Questions

Can "fooling" and "fueling" be used interchangeably?
No - they are not even the same part of speech. "fooling" is a verb and "fueling" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "fooling" or "fueling" show up more?
"fooling" is the more common of the two: it sits at frequency rank #19,339 in our English list, against #23,838 for "fueling". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "fooling" and "fueling".

  • Full dictionary entry for "fooling" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fueling" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #242,504 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "fooling" and "fueling" also get mixed up with nearby pairs, the highest-scored neighbour is "fueling vs Fuelling". 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 #242,504 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