rlyvsrubyWhich spelling fits?

Quick tell: rly is a adverb, ruby is a noun, so they fill different roles in a sentence.

Which to use

“rly” is an adverb and “ruby” is a noun - they look or sound alike but fill different roles in a sentence.

#41,356
“rly” frequency rank
#7,386
“ruby” frequency rank
48742
confusion score

Side-by-Side Comparison

Feature rly ruby
Definition Abbreviation of really. A clear, deep, red variety of corundum, valued as a precious stone.

Letter map: rly vs ruby

Shared letters muted; letters that set rly and ruby apart highlighted. Shared run: 2.

3 ch
rly
4 ch
ruby

Part-of-speech tell for rly / ruby

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: rly is anadverb and rubyanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 48742, derived from the frequency rank of both members and their visual similarity.

rly is recorded at frequency rank #41,356, classified as anadv. ruby is at rank #7,386, tagged as anoun, pronounced /ˈɹuː.bi/.

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 48742, this pair ranks #190,179 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of rly vs ruby

Shared letters: ry. Private to "rly": l. Private to "ruby": bu.

"rly" · 3 letters · shape CCV  ·  "ruby" · 4 letters · shape CVCV

Known mistypes of this pair

  • rubyrbuy · rruby · rubby · rubyy · ruyb · urby

Frequently Asked Questions

Can "rly" and "ruby" be used interchangeably?
No - they are not even the same part of speech. "rly" is an adverb and "ruby" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "rly" or "ruby"?
"ruby" is the more common of the two: it sits at frequency rank #7,386 in our English list, against #41,356 for "rly". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "rly" vs "ruby" is on the table, pick a follow-up below.

  • Full dictionary entry for "rly" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ruby" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #190,179 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "rly" and "ruby" also get mixed up with nearby pairs, the highest-scored neighbour is "rly 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 #190,179 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