Which to use
“posterior” is an adjective and “posterity” is a noun - they look or sound alike but fill different roles in a sentence.
- #16,562
- “posterior” frequency rank
- #30,183
- “posterity” frequency rank
- 46745
- confusion score
Side-by-Side Comparison
| Feature | posterior | posterity |
|---|---|---|
| Definition | Nearer the rear or hind end; nearer the caudal end of the body in quadrupeds or the dorsal end in bipeds. | All the future generations, especially the descendants of a specific person. |
Where the spellings diverge
Shared letters are muted; the letters that actually set posterior and posterity apart are highlighted. They share 7 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
posterior and posterity form a confusable pair in the English 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 2 positions - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 46745, derived from the frequency rank of both members and their visual similarity.
posterior is recorded at frequency rank #16,562, classified as anadj, pronounced /pɒsˈtɪə.ɹi.ə/. posterity is at rank #30,183, tagged as anoun, pronounced /pɒˈstɛɹɪti/.
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 46745, this pair ranks #208,877 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "posterior" and "posterity" be used interchangeably?
Remembering posterior vs posterity
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “posterior”; for a noun, it's “posterity”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “posterior” entry
- Browse more pairs most likely to be confused. Most confusable