relyvsreoWhich spelling fits?

Quick tell: rely is a verb, reo is a noun, so they fill different roles in a sentence.

Which to use

“rely” is a verb and “reo” is a noun - they look or sound alike but fill different roles in a sentence.

#4,405
“rely” frequency rank
#42,371
“reo” frequency rank
46776
confusion score

Side-by-Side Comparison

Feature rely reo
Definition To trust; to have confidence in; to depend. A reinforcement (additional soldiers).

Letter map: rely vs reo

Shared letters muted; letters that set rely and reo apart highlighted. Shared run: 2. rely runs 4 letters (CVCV) against reo's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
rely
3 ch
reo

Part-of-speech tell for rely / reo

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: rely is averb and reoanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 46776, derived from the frequency rank of both members and their visual similarity.

rely is recorded at frequency rank #4,405, classified as averb, pronounced /ɹɪˈlaɪ/. reo is at rank #42,371, tagged as anoun.

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 46776, this pair ranks #208,589 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of rely vs reo

Shared letters: er. Private to "rely": ly. Private to "reo": o.

"rely" · 4 letters · shape CVCV  ·  "reo" · 3 letters · shape CVV

Known mistypes of this pair

  • relyerly · relly · relyy · reyl · rley · rrely

Frequently Asked Questions

Is swapping "rely" for "reo" ever safe?
No - they are not even the same part of speech. "rely" is a verb and "reo" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "rely" or "reo"?
"rely" is the more common of the two: it sits at frequency rank #4,405 in our English list, against #42,371 for "reo". 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 "rely" and "reo".

  • Full dictionary entry for "rely" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "reo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #208,589 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "rely" and "reo" also get mixed up with nearby pairs, the highest-scored neighbour is "reo vs Rua". 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 #208,589 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