tobyvsTOSWhat's the difference?

Which to use

“toby” and “TOS” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#11,808
“toby” frequency rank
#19,720
“TOS” frequency rank
31528
confusion score

Side-by-Side Comparison

Feature toby TOS
Definition A drinking mug, in the shape of a human head with a hat atop; a Toby jug. Initialism of terms of service.

Letter map: toby vs TOS

Shared letters muted; letters that set toby and TOS apart highlighted. Shared run: 2.

4 ch
toby
3 ch
TOS

Corpus notes: toby and TOS

toby and TOS are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 31528, derived from the frequency rank of both members and their visual similarity.

toby is recorded at frequency rank #11,808, classified as anoun. TOS is at rank #19,720, tagged as anoun, pronounced /tiː əʊ ɛs/.

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 31528, this pair ranks #345,340 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of toby vs TOS

Shared letters: ot. Private to "toby": by. Private to "TOS": s.

"toby" · 4 letters · shape CVCV  ·  "TOS" · 3 letters · shape CVC

Known mistypes of this pair

  • tobyotby · tboy · tobby · tobyy · toyb · ttoby

Frequently Asked Questions

Can "toby" and "TOS" be used interchangeably?
No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "toby" vs "TOS" - which ranks higher?
"toby" is the more common of the two: it sits at frequency rank #11,808 in our English list, against #19,720 for "TOS". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "toby" vs "TOS" is on the table, pick a follow-up below.

  • Full dictionary entry for "toby" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "TOS" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #345,340 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "toby" and "TOS" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs TOS". 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 #345,340 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