spermvssuperbWhich spelling fits?

Quick tell: sperm is a noun, superb is an adjective, so they fill different roles in a sentence.

Which to use

“sperm” is a noun and “superb” is an adjective - they look or sound alike but fill different roles in a sentence.

#9,102
“sperm” frequency rank
#7,618
“superb” frequency rank
16720
confusion score

Side-by-Side Comparison

Feature sperm superb
Definition The reproductive cell or gamete of the male; a spermatozoon. First-rate; of the highest quality; exceptionally good.

Where the eye mixes sperm and superb

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
sperm
6 ch
superb

Look-alike desk: sperm vs superb

These two trip readers on the page rather than in the ear: sperm is /spɜɹm/ while superb is /suˈpɝb/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 16720, derived from the frequency rank of both members and their visual similarity.

sperm is recorded at frequency rank #9,102, classified as anoun, pronounced /spɜɹm/. superb is at rank #7,618, tagged as anadj, pronounced /suˈpɝb/.

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 16720, this pair ranks #455,974 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sperm vs superb

Shared letters: eprs. Private to "sperm": m. Private to "superb": bu.

"sperm" · 5 letters · shape CCVCC  ·  "superb" · 6 letters · shape CVCVCC

Known mistypes of this pair

  • spermpserm · seprm · spemr · spermm · sperrm · spperm · sprem · ssperm
  • superbspuerb · ssuperb · sueprb · supebr · superbb · superrb · supperb · supreb

Frequently Asked Questions

Is swapping "sperm" for "superb" ever safe?
No - they are not even the same part of speech. "sperm" is a noun and "superb" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sperm" or "superb"?
"superb" is the more common of the two: it sits at frequency rank #7,618 in our English list, against #9,102 for "sperm". 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 "sperm" and "superb" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "sperm" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "superb" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #455,974 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "sperm" and "superb" also get mixed up with nearby pairs, the highest-scored neighbour is "sperm vs Sturm". 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 #455,974 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