CassinivscussingWhich spelling fits?

Quick tell: Cassini is a name, cussing is a verb, so they fill different roles in a sentence.

Which to use

“Cassini” is a name and “cussing” is a verb - they look or sound alike but fill different roles in a sentence.

#37,844
“Cassini” frequency rank
#44,148
“cussing” frequency rank
81992
confusion score

Side-by-Side Comparison

Feature Cassini cussing
Definition A surname from Italian. present participle and gerund of cuss

Letter map: Cassini vs cussing

Shared letters muted; letters that set Cassini and cussing apart highlighted. Shared run: 5. Cassini (CVCCVCV) and cussing (CVCCVCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

7 ch
Cassini
7 ch
cussing

Role in the sentence - Cassini and cussing

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Cassini is aname and cussingaverb. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 81992, derived from the frequency rank of both members and their visual similarity.

Cassini is recorded at frequency rank #37,844, classified as aname. cussing is at rank #44,148, tagged as averb, pronounced /ˈkʌsɪŋ/.

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 81992, this pair ranks #16,594 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Cassini vs cussing

Shared letters: cins. Private to "Cassini": a. Private to "cussing": gu.

"Cassini" · 7 letters · shape CVCCVCV  ·  "cussing" · 7 letters · shape CVCCVCC

Known mistypes of this pair

  • Cassini ← acssini · casini · casisni · cassiin · cassinni · cassnii · ccassini · csasini
  • cussing ← ccussing · csusing · cusing · cusisng · cussign · cussingg · cussinng · cussnig

Frequently Asked Questions

Is swapping "Cassini" for "cussing" ever safe?
No - they are not even the same part of speech. "Cassini" is a name and "cussing" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Cassini" vs "cussing" - which ranks higher?
"Cassini" is the more common of the two: it sits at frequency rank #37,844 in our English list, against #44,148 for "cussing". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "Cassini" vs "cussing" is on the table, pick a follow-up below.

  • Full dictionary entry for "Cassini" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cussing" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #16,594 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Cassini" and "cussing" also get mixed up with nearby pairs, the highest-scored neighbour is "cupping vs cussing". 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 #16,594 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