tranquilityvstranquillityWhich spelling fits?

Which to use

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

#28,405
“tranquility” frequency rank
#39,132
“tranquillity” frequency rank
67537
confusion score

Side-by-Side Comparison

Feature tranquility tranquillity
Definition American standard spelling of tranquillity. The state of being tranquil; peacefulness, the absence of disturbance or stress; serenity; calm.

Where the eye mixes tranquility and tranquillity

Muted = shared; highlighted = the visual trap. They share 11 letters in sequence.

11 ch
tranquility
12 ch
tranquillity

Look-alike desk: tranquility vs tranquillity

A purely visual mix-up. tranquility (/træŋˈkwɪlɪti/) and tranquillity (/tɹæŋˈkwɪl.ɪ.ti/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 67537, derived from the frequency rank of both members and their visual similarity.

tranquility is recorded at frequency rank #28,405, classified as anoun, pronounced /træŋˈkwɪlɪti/. tranquillity is at rank #39,132, tagged as anoun, pronounced /tɹæŋˈkwɪl.ɪ.ti/.

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 67537, this pair ranks #62,868 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of tranquility vs tranquillity

Shared letters: ailnqrtuy. Private to "tranquility": -. Private to "tranquillity": -.

"tranquility" · 11 letters · shape CCVCCVVCVCV  ·  "tranquillity" · 12 letters · shape CCVCCVVCCVCV

Known mistypes of this pair

  • tranquilityrtanquility · tarnquility · trannquility · tranqiulity · tranqquility · tranquiilty · tranquilitty · tranquilityy
  • tranquillityrtanquillity · tarnquillity · trannquillity · tranqiullity · tranqquillity · tranquililty · tranquillitty · tranquillityy

Frequently Asked Questions

Is swapping "tranquility" for "tranquillity" ever safe?
No. They are said differently (/træŋˈkwɪlɪti/ versus /tɹæŋˈkwɪl.ɪ.ti/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "tranquility" or "tranquillity" show up more?
"tranquility" is the more common of the two: it sits at frequency rank #28,405 in our English list, against #39,132 for "tranquillity". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "tranquility" and "tranquillity" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "tranquility" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tranquillity" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #62,868 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • 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 #62,868 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