MIRIvsmirthWhich spelling fits?

Quick tell: MIRI is a name, mirth is a noun, so they fill different roles in a sentence.

Which to use

“MIRI” is a name and “mirth” is a noun - they look or sound alike but fill different roles in a sentence.

#46,627
“MIRI” frequency rank
#46,070
“mirth” frequency rank
92697
confusion score

Side-by-Side Comparison

Feature MIRI mirth
Definition Acronym of Machine Intelligence Research Institute. The emotion usually following humor and accompanied by laughter.

Letter map: MIRI vs mirth

Shared letters muted; letters that set MIRI and mirth apart highlighted. Shared run: 3. MIRI runs 4 letters (CVCV) against mirth's 5 (CVCCC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
MIRI
5 ch
mirth

Part-of-speech tell for MIRI / mirth

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: MIRI is aname and mirthanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 92697, derived from the frequency rank of both members and their visual similarity.

MIRI is recorded at frequency rank #46,627, classified as aname. mirth is at rank #46,070, tagged as anoun, pronounced /mɜɹθ/.

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 92697, this pair ranks #2,399 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of MIRI vs mirth

Shared letters: imr. Private to "MIRI": -. Private to "mirth": ht.

"MIRI" · 4 letters · shape CVCV  ·  "mirth" · 5 letters · shape CVCCC

Known mistypes of this pair

  • MIRI ← imri · miir · mirri · mmiri · mrii
  • mirth ← imrth · mirht · mirrth · mirthh · mirtth · mitrh · mmirth · mrith

Frequently Asked Questions

Can "MIRI" and "mirth" be used interchangeably?
No - they are not even the same part of speech. "MIRI" is a name and "mirth" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "MIRI" or "mirth"?
"mirth" is the more common of the two: it sits at frequency rank #46,070 in our English list, against #46,627 for "MIRI". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "MIRI" vs "mirth" is on the table, pick a follow-up below.

  • Full dictionary entry for "MIRI" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mirth" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #2,399 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "MIRI" and "mirth" also get mixed up with nearby pairs, the highest-scored neighbour is "marl vs MIRI". 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 #2,399 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