altérervsalterneWhat's the difference?

Quick tell: altérer is a verb, alterne is an adjective, so they fill different roles in a sentence.

Which to use

“altérer” is a verb and “alterne” is an adjective - they look or sound alike but fill different roles in a sentence.

#22,157
“altérer” frequency rank
#24,852
“alterne” frequency rank
47009
confusion score

Side-by-Side Comparison

Feature altérer alterne
Definition Modifier dans sa nature, dans sa structure, un corps. Désigne les angles formés par deux droites parallèles, avec les côtés opposés d’une même sécante.

Where the spellings diverge

Shared letters are muted; the letters that actually set altérer and alterne apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.

7 ch
altérer
7 ch
alterne

Spelling & Dictionary Insight

altérer and alterne form a confusable pair in the French index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They share most of their letters but differ in 3 positions - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 47009, derived from the frequency rank of both members and their visual similarity.

altérer is recorded at frequency rank #22,157, classified as averb, pronounced \al.te.ʁe\. alterne is at rank #24,852, tagged as anadj, pronounced \al.tɛʁn\.

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 47009, this pair ranks #190,362 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Frequency comparison

altérer#22,157
alterne#24,852

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "altérer" and "alterne" be used interchangeably?
No, "altérer" and "alterne" have distinct meanings and cannot be swapped without changing the meaning of a sentence. Understanding the specific definition and context for each word is essential for correct usage.

Remembering altérer vs alterne

The fastest way to pick the right one every time.

  • Check the role first: if you need a verb, it's “altérer”; for an adjective, it's “alterne”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “altérer” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list