SackvssadTell them apart

Quick tell: Sack is a noun, sad is an adverb, so they fill different roles in a sentence.

Which to use

“Sack” is a noun and “sad” is an adverb - they look or sound alike but fill different roles in a sentence.

#4,301
“Sack” frequency rank
#23,689
“sad” frequency rank
27990
confusion score

Side-by-Side Comparison

Feature Sack sad
Definition Transport- und Aufbewahrungsbehältnis aus grobem Stoff^([1], [2]) oder anderem robustem Material in diesem Augenblick; jetzt, nun

Where the eye mixes Sack and sad

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
Sack
3 ch
sad

Why the eye confuses Sack with sad

These two trip readers on the page rather than in the ear: Sack is [zak] while sad is [ˈsad]. 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 adverb), which is usually the fastest check. Our composite confusion score for this pair is 27990, derived from the frequency rank of both members and their visual similarity.

Sack is recorded at frequency rank #4,301, classified as anoun, pronounced [zak]. sad is at rank #23,689, tagged as anadv, pronounced [ˈsad].

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 27990, this pair ranks #1,792,448 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Sack vs sad

Shared letters: as. Private to "Sack": ck. Private to "sad": d.

"Sack" · 4 letters · shape CVCC  ·  "sad" · 3 letters · shape CVC

Known mistypes of this pair

  • Sackasck · sacck · sackk · sakc · scak · ssack

Frequently Asked Questions

Is swapping "Sack" for "sad" ever safe?
No - they are not even the same part of speech. "Sack" is a noun and "sad" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "Sack" or "sad"?
"Sack" is the more common of the two: it sits at frequency rank #4,301 in our German list, against #23,689 for "sad". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "Sack" and "sad" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "Sack" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sad" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,792,448 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Sack" and "sad" also get mixed up with nearby pairs, the highest-scored neighbour is "sad vs seg". 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 #1,792,448 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list