IsaacvsTOTell them apart

Quick tell: Isaac is a name, TO is an abbrev, so they fill different roles in a sentence.

Which to use

“Isaac” is a name and “TO” is an abbrev - they look or sound alike but fill different roles in a sentence.

#16,741
“Isaac” frequency rank
#589
“TO” frequency rank
17330
confusion score

Side-by-Side Comparison

Feature Isaac TO
Definition männlicher Vorname KFZ-Kennzeichen für Torino (Turin)

Letter map: Isaac vs TO

Shared letters muted; letters that set Isaac and TO apart highlighted. No shared letter run.

5 ch
Isaac
2 ch
TO

Role in the sentence - Isaac and TO

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Isaac is aname and TOanabbrev. On the page they differ by 3 letter(s) in length. Our composite confusion score for this pair is 17330, derived from the frequency rank of both members and their visual similarity.

Isaac is recorded at frequency rank #16,741, classified as aname, pronounced […]. TO is at rank #589, tagged as anabbrev, pronounced […].

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 17330, this pair ranks #1,928,326 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Isaac vs TO

Shared letters: none. Private to "Isaac": acis. Private to "TO": ot.

"Isaac" · 5 letters · shape VCVVC  ·  "TO" · 2 letters · shape CV

Known mistypes of this pair

  • Isaaciasac · isaacc · isac · isaca · issaac · siaac

Frequently Asked Questions

Is swapping "Isaac" for "TO" ever safe?
No - they are not even the same part of speech. "Isaac" is a name and "TO" an abbrev, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "Isaac" or "TO" show up more?
"TO" is the more common of the two: it sits at frequency rank #589 in our German list, against #16,741 for "Isaac". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Done with this confusable. These links stay specific to "Isaac" and "TO".

  • Full dictionary entry for "Isaac" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "TO" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,928,326 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Isaac" and "TO" also get mixed up with nearby pairs, the highest-scored neighbour is "Isaac vs puzzles". 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 #1,928,326 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