Which to use
“idea” and “index” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #32,851
- “idea” frequency rank
- #6,203
- “index” frequency rank
- 39054
- confusion score
Side-by-Side Comparison
| Feature | idea | index |
|---|---|---|
| Definition | Idée. | Doigt le plus proche du pouce, parce que c’est celui-là dont on se sert ordinairement pour indiquer, pour montrer quelque chose. |
Where the spellings diverge
Shared letters are muted; the letters that actually set idea and index apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
A purely visual mix-up. idea (\aɪ.ˈdi.ə\) and index (\ɛ̃.dɛks\) 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 39054, derived from the frequency rank of both members and their visual similarity.
idea is recorded at frequency rank #32,851, classified as anoun, pronounced \aɪ.ˈdi.ə\. index is at rank #6,203, tagged as anoun, pronounced \ɛ̃.dɛks\.
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 39054, this pair ranks #250,836 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of idea vs index
Shared letters: dei. Private to "idea": a. Private to "index": nx.
"idea" · 4 letters · shape VCVV · "index" · 5 letters · shape VCCVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "idea" and "index" be used interchangeably?
Which is more common, "idea" or "index"?
Remembering idea vs index
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 “idea” entry
- Browse more pairs most likely to be confused. Most confusable