acht vs Ahr, What's the Difference?

Which to use

“acht” is a num and “Ahr” is a name - they look or sound alike but fill different roles in a sentence.

#899
“acht” frequency rank: #45,100
“Ahr” frequency rank: 45999
confusion score

Side-by-Side Comparison

Feature	acht	Ahr
Definition	die Kardinalzahl zwischen sieben und neun	Fluss im südlichen Nordrhein-Westfalen, Deutschland und im nördlichen Rheinland-Pfalz, linker Nebenfluss des Rheins

Where the spellings diverge

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

4 ch

acht

3 ch

Ahr

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: acht is [axt] while Ahr is [aːɐ̯]. 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 (num vs name), which is usually the fastest check. Our composite confusion score for this pair is 45999, derived from the frequency rank of both members and their visual similarity.

acht is recorded at frequency rank #899, classified as anum, pronounced [axt]. Ahr is at rank #45,100, tagged as aname, pronounced [aːɐ̯].

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 45999, this pair ranks #1,333,943 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of acht vs Ahr

Shared letters: ah. Private to "acht": ct. Private to "Ahr": r.

"acht" · 4 letters · shape VCCC · "Ahr" · 3 letters · shape VCC

Known mistypes of this pair

acht ← accht · achht · achtt · acth · ahct · caht

Frequency comparison

acht#899

Ahr#45,100

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "acht" and "Ahr" be used interchangeably?

No - they are not even the same part of speech. "acht" is a num and "Ahr" a name, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "acht" or "Ahr"?

"acht" is the more common of the two: it sits at frequency rank #899 in our German list, against #45,100 for "Ahr". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering acht vs Ahr

The fastest way to pick the right one every time.

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