sickervssimmerWhat's the difference?

Quick tell: sicker is a adjective, simmer is a verb, so they fill different roles in a sentence.

Which to use

“sicker” is an adjective and “simmer” is a verb - they look or sound alike but fill different roles in a sentence.

#37,221
“sicker” frequency rank
#20,499
“simmer” frequency rank
57720
confusion score

Side-by-Side Comparison

Feature sicker simmer
Definition comparative form of sick: more sick. To cook or undergo heating slowly at or below the boiling point.

Where the eye mixes sicker and simmer

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. sicker and simmer follow the identical consonant-vowel pattern (CVCCVC). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
sicker
6 ch
simmer

Why the eye confuses sicker with simmer

These two trip readers on the page rather than in the ear: sicker is /ˈsɪkɚ/ while simmer is /ˈsɪmɚ/. 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 57720, derived from the frequency rank of both members and their visual similarity.

sicker is recorded at frequency rank #37,221, classified as anadj, pronounced /ˈsɪkɚ/. simmer is at rank #20,499, tagged as averb, pronounced /ˈsɪmɚ/.

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 57720, this pair ranks #117,493 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of sicker vs simmer

Shared letters: eirs. Private to "sicker": ck. Private to "simmer": m.

"sicker" · 6 letters · shape CVCCVC  ·  "simmer" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • sickeriscker · sciker · siccker · sicekr · sickerr · sickker · sickre · sikcer
  • simmerismmer · simemr · simer · simmerr · simmre · smimer · ssimmer

Frequently Asked Questions

Do "sicker" and "simmer" mean the same thing in a sentence?
No - they are not even the same part of speech. "sicker" is an adjective and "simmer" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sicker" or "simmer"?
"simmer" is the more common of the two: it sits at frequency rank #20,499 in our English list, against #37,221 for "sicker". 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 "sicker" and "simmer" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "sicker" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "simmer" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #117,493 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "sicker" and "simmer" also get mixed up with nearby pairs, the highest-scored neighbour is "sicker vs sinker". 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 #117,493 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list