1D vs 1e, What's the Difference?

Which to use

“1D” and “1e” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#48,884
“1D” frequency rank: #15,787
“1e” frequency rank: 64671
confusion score

Side-by-Side Comparison

Feature	1D	1e
Definition	À une dimension, monodimensionnel / unidimensionnel : eindimensional.	Variante orthographique de eerste. Premier, 1ᵉʳ.

Where the eye mixes 1D and 1e

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch

Look-alike desk: 1D vs 1e

A purely visual mix-up. 1D (\ˈaɪ̯nˈdeː\) and 1e (\eːɾ.stǝ\) 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 a single letter - d in “1D” becomes e in “1e”. Our composite confusion score for this pair is 64671, derived from the frequency rank of both members and their visual similarity.

1D is recorded at frequency rank #48,884, classified as anadj, pronounced \ˈaɪ̯nˈdeː\. 1e is at rank #15,787, tagged as anadj, pronounced \eːɾ.stǝ\.

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 64671, this pair ranks #75,924 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of 1D vs 1e

Shared letters: none. Private to "1D": d. Private to "1e": e.

"1D" · 1 letters · shape C · "1e" · 1 letters · shape V

Frequently Asked Questions

Is swapping "1D" for "1e" ever safe?

No. They are said differently (\ˈaɪ̯nˈdeː\ versus \eːɾ.stǝ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "1D" or "1e"?

"1e" is the more common of the two: it sits at frequency rank #15,787 in our French list, against #48,884 for "1D". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "1D" and "1e" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "1D" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "1e" - compare definitions side by side with the headword page. Word entry
This pair ranks #75,924 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"1D" and "1e" also get mixed up with nearby pairs, the highest-scored neighbour is "1D vs 1st". Nearby pair

Confusion rank #75,924 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.