fail vs fas, What's the Difference?

Which to use

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

#27,286
“fail” frequency rank: #38,095
“fas” frequency rank: 65381
confusion score

Side-by-Side Comparison

Feature	fail	fas
Definition	ein Ausfall, ein Fehlschlag	2. Person Singular Imperativ Präsens Aktiv des Verbs fasen

Where the spellings diverge

Shared letters are muted; the letters that actually set fail and fas apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

4 ch

fail

3 ch

fas

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: fail is [feɪl] while fas is [faːs]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 65381, derived from the frequency rank of both members and their visual similarity.

fail is recorded at frequency rank #27,286, classified as anoun, pronounced [feɪl]. fas is at rank #38,095, tagged as averb, pronounced [faːs].

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 65381, this pair ranks #608,929 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fail vs fas

Shared letters: af. Private to "fail": il. Private to "fas": s.

"fail" · 4 letters · shape CVVC · "fas" · 3 letters · shape CVC

Known mistypes of this pair

fail ← afil · faill · fali · ffail · fial

Frequency comparison

fail#27,286

fas#38,095

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "fail" and "fas" be used interchangeably?

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

Which is more common, "fail" or "fas"?

"fail" is the more common of the two: it sits at frequency rank #27,286 in our German list, against #38,095 for "fas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering fail vs fas

The fastest way to pick the right one every time.

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