Which to use
“tilly” and “trill” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #31,380
- “tilly” frequency rank
- #40,489
- “trill” frequency rank
- 71869
- confusion score
Side-by-Side Comparison
| Feature | tilly | trill |
|---|---|---|
| Definition | An extra product given to a customer at no additional charge; a lagniappe. | A rapid alternation between an indicated note and the one above it as an ornament; in musical notation usually indicated with the letters tr written above the staff. |
Where the eye mixes tilly and trill
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses tilly with trill
A purely visual mix-up. tilly (/ˈtɪli/) and trill (/tɹɪl/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 3 positions. Our composite confusion score for this pair is 71869, derived from the frequency rank of both members and their visual similarity.
tilly is recorded at frequency rank #31,380, classified as anoun, pronounced /ˈtɪli/. trill is at rank #40,489, tagged as anoun, pronounced /tɹɪl/.
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 71869, this pair ranks #45,067 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of tilly vs trill
Shared letters: ilt. Private to "tilly": y. Private to "trill": r.
"tilly" · 5 letters · shape CVCCV · "trill" · 5 letters · shape CCVCC
Known mistypes of this pair
Frequently Asked Questions
Can "tilly" and "trill" be used interchangeably?
Which is more common, "tilly" or "trill"?
What to do next
Eye-level mix-up between "tilly" and "trill" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "tilly" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "trill" - compare definitions side by side with the headword page. Word entry
- This pair ranks #45,067 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "tilly" and "trill" also get mixed up with nearby pairs, the highest-scored neighbour is "trawl vs trill". 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 #45,067 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.