Which to use
“ideas” and “ides” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #1,527
- “ideas” frequency rank
- #44,856
- “ides” frequency rank
- 46383
- confusion score
Side-by-Side Comparison
| Feature | ideas | ides |
|---|---|---|
| Definition | plural of idea | The notional full-moon day of a Roman month, occurring on the 15th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 13th day of all other months. |
Where the eye mixes ideas and ides
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: ideas vs ides
A purely visual mix-up. ideas (/aɪˈdɪəz/) and ides (/aɪdz/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 46383, derived from the frequency rank of both members and their visual similarity.
ideas is recorded at frequency rank #1,527, classified as anoun, pronounced /aɪˈdɪəz/. ides is at rank #44,856, tagged as anoun, pronounced /aɪdz/.
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 46383, this pair ranks #212,285 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ideas vs ides
Shared letters: deis. Private to "ideas": a. Private to "ides": -.
"ideas" · 5 letters · shape VCVVC · "ides" · 4 letters · shape VCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "ideas" for "ides" ever safe?
In ordinary English text, does "ideas" or "ides" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "ideas" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ides" - compare definitions side by side with the headword page. Word entry
- This pair ranks #212,285 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "ideas" and "ides" also get mixed up with nearby pairs, the highest-scored neighbour is "ices vs ides". 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 #212,285 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.