fen vs fis, What's the Difference?

Which to use

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

#44,597
“fen” frequency rank: #26,408
“fis” frequency rank: 71005
confusion score

Side-by-Side Comparison

Feature	fen	fis
Definition	Fenn	1. Person Singulra Indikativ historisches Perfekt Aktiv des Verbs faire

Where the spellings diverge

Shared letters are muted; the letters that actually set fen and fis apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch

fen

3 ch

fis

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: fen is [fɛn] while fis is [fi]. 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 71005, derived from the frequency rank of both members and their visual similarity.

fen is recorded at frequency rank #44,597, classified as anoun, pronounced [fɛn]. fis is at rank #26,408, tagged as averb, pronounced [fi].

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 71005, this pair ranks #429,426 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of fen vs fis

Shared letters: f. Private to "fen": en. Private to "fis": is.

"fen" · 3 letters · shape CVC · "fis" · 3 letters · shape CVC

Frequency comparison

fen#44,597

fis#26,408

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "fen" and "fis" be used interchangeably?

No - they are not even the same part of speech. "fen" is a noun and "fis" a verb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "fen" or "fis"?

"fis" is the more common of the two: it sits at frequency rank #26,408 in our German list, against #44,597 for "fen". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering fen vs fis

The fastest way to pick the right one every time.

Check the role first: if you need a noun, it's “fen”; for a verb, it's “fis”.
See each word in full, definition, IPA, etymology and its other confusables. Full “fen” entry
Browse more pairs most likely to be confused. Most confusable