sickvssimWhat's the difference?

Quick tell: sick is a verb, sim is an adverb, so they fill different roles in a sentence.

Which to use

“sick” is a verb and “sim” is an adverb - they look or sound alike but fill different roles in a sentence.

#27,489
“sick” frequency rank
#10,749
“sim” frequency rank
38238
confusion score

Side-by-Side Comparison

Feature sick sim
Definition 2. Person Singular Imperativ Präsens Aktiv des Verbs sicken ja

Where the eye mixes sick and sim

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

4 ch
sick
3 ch
sim

Why the eye confuses sick with sim

These two trip readers on the page rather than in the ear: sick is [zɪk] while sim is [sĩ]. 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 (verb vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 38238, derived from the frequency rank of both members and their visual similarity.

sick is recorded at frequency rank #27,489, classified as averb, pronounced [zɪk]. sim is at rank #10,749, tagged as anadv, pronounced [sĩ].

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 38238, this pair ranks #1,569,182 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sick vs sim

Shared letters: is. Private to "sick": ck. Private to "sim": m.

"sick" · 4 letters · shape CVCC  ·  "sim" · 3 letters · shape CVC

Known mistypes of this pair

  • sickisck · scik · sicck · sickk · sikc · ssick

Frequently Asked Questions

Is swapping "sick" for "sim" ever safe?
No - they are not even the same part of speech. "sick" is a verb and "sim" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sick" or "sim"?
"sim" is the more common of the two: it sits at frequency rank #10,749 in our German list, against #27,489 for "sick". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "sick" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sim" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,569,182 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "sick" and "sim" also get mixed up with nearby pairs, the highest-scored neighbour is "sick vs Sire". 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 #1,569,182 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