slothvssthConfusable pair

Quick tell: sloth is a noun, sth is a pronoun, so they fill different roles in a sentence.

Which to use

“sloth” is a noun and “sth” is a pronoun - they look or sound alike but fill different roles in a sentence.

#25,579
“sloth” frequency rank
#40,035
“sth” frequency rank
65614
confusion score

Side-by-Side Comparison

Feature sloth sth
Definition Laziness; slowness in the mindset; disinclination to action or labour. Abbreviation of something.

Letter map: sloth vs sth

Shared letters muted; letters that set sloth and sth apart highlighted. Shared run: 3.

5 ch
sloth
3 ch
sth

Role in the sentence - sloth and sth

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sloth is anoun and sthapronoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 65614, derived from the frequency rank of both members and their visual similarity.

sloth is recorded at frequency rank #25,579, classified as anoun, pronounced /sləʊθ/. sth is at rank #40,035, tagged as apron.

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 65614, this pair ranks #71,891 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of sloth vs sth

Shared letters: hst. Private to "sloth": lo. Private to "sth": -.

"sloth" · 5 letters · shape CCVCC  ·  "sth" · 3 letters · shape CCC

Known mistypes of this pair

  • slothlsoth · slloth · sloht · slothh · slotth · sltoh · solth · ssloth

Frequently Asked Questions

Is swapping "sloth" for "sth" ever safe?
No - they are not even the same part of speech. "sloth" is a noun and "sth" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "sloth" vs "sth" - which ranks higher?
"sloth" is the more common of the two: it sits at frequency rank #25,579 in our English list, against #40,035 for "sth". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "sloth" vs "sth" is on the table, pick a follow-up below.

  • Full dictionary entry for "sloth" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sth" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #71,891 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "sloth" and "sth" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs sth". 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 #71,891 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