stayvsSyConfusable pair

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

Which to use

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

#473
“stay” frequency rank
#23,412
“Sy” frequency rank
23885
confusion score

Side-by-Side Comparison

Feature stay Sy
Definition To remain in a particular place, especially for a definite or short period of time; sojourn; abide. Abbreviation of Seyfert galaxy, a type of AGN class of active galaxy.

Where the eye mixes stay and Sy

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
stay
2 ch
Sy

Look-alike desk: stay vs Sy

These two trip readers on the page rather than in the ear: stay is /steɪ/ while Sy is /saɪ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 23885, derived from the frequency rank of both members and their visual similarity.

stay is recorded at frequency rank #473, classified as averb, pronounced /steɪ/. Sy is at rank #23,412, tagged as anoun, pronounced /saɪ/.

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 23885, this pair ranks #406,035 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of stay vs Sy

Shared letters: sy. Private to "stay": at. Private to "Sy": -.

"stay" · 4 letters · shape CCVV  ·  "Sy" · 2 letters · shape CV

Known mistypes of this pair

  • staysaty · sstay · stayy · sttay · stya · tsay

Frequently Asked Questions

Is swapping "stay" for "Sy" ever safe?
No - they are not even the same part of speech. "stay" is a verb and "Sy" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "stay" or "Sy" show up more?
"stay" is the more common of the two: it sits at frequency rank #473 in our English list, against #23,412 for "Sy". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "stay" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Sy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #406,035 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "stay" and "Sy" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs Sy". 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 #406,035 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