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 spellings diverge
Shared letters are muted; the letters that actually set ideas and ides apart are highlighted. They share 4 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
ideas and ides form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. 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.
Frequency comparison
Frequently Asked Questions
Can "ideas" and "ides" be used interchangeably?
Remembering ideas vs ides
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “ideas” entry
- Browse more pairs most likely to be confused. Most confusable