doublesvsdoubtlessConfusable pair

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

Which to use

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

#8,414
“doubles” frequency rank
#25,739
“doubtless” frequency rank
34153
confusion score

Side-by-Side Comparison

Feature doubles doubtless
Definition a game between pairs of players Characterized by or experiencing no doubt at all, certain; undoubted; undoubting.

Letter map: doubles vs doubtless

Shared letters muted; letters that set doubles and doubtless apart highlighted. Shared run: 7.

7 ch
doubles
9 ch
doubtless

Role in the sentence - doubles and doubtless

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: doubles is anoun and doubtlessanadjective. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 34153, derived from the frequency rank of both members and their visual similarity.

doubles is recorded at frequency rank #8,414, classified as anoun. doubtless is at rank #25,739, tagged as anadj, pronounced /ˈdaʊ̯tləs/.

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 34153, this pair ranks #323,204 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of doubles vs doubtless

Shared letters: bdelosu. Private to "doubles": -. Private to "doubtless": t.

"doubles" · 7 letters · shape CVVCCVC  ·  "doubtless" · 9 letters · shape CVVCCCVCC

Known mistypes of this pair

  • doublesddoubles · dobules · doubbles · doubels · doubless · doublles · doublse · doulbes
  • doubtlessddoubtless · dobutless · doubbtless · doubltess · doubtelss · doubtles · doubtlless · doubtlses

Frequently Asked Questions

Do "doubles" and "doubtless" mean the same thing in a sentence?
No - they are not even the same part of speech. "doubles" is a noun and "doubtless" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "doubles" or "doubtless"?
"doubles" is the more common of the two: it sits at frequency rank #8,414 in our English list, against #25,739 for "doubtless". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "doubles" and "doubtless".

  • Full dictionary entry for "doubles" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "doubtless" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #323,204 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "doubles" and "doubtless" also get mixed up with nearby pairs, the highest-scored neighbour is "dauntless vs doubtless". 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 #323,204 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